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68247894137760 = 2533523686874941
BaseRepresentation
bin11111000010010001100110…
…11111001001101110100000
322221122102202002022220001000
433201020303133021232200
532421133141344402020
6401052352202112000
720242514303363451
oct1741106337115640
9287572662286030
1068247894137760
111a822851027077
1277a2a957ab600
132c109971702ac
1412bd303c53128
157d543ea0d090
hex3e12337c9ba0

68247894137760 has 192 divisors, whose sum is σ = 249253178952960. Its totient is φ = 17408158479360.

The previous prime is 68247894137747. The next prime is 68247894137803. The reversal of 68247894137760 is 6773149874286.

68247894137760 is a `hidden beast` number, since 6 + 8 + 2 + 4 + 7 + 89 + 413 + 77 + 60 = 666.

68247894137760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343338111 + ... + 343536830.

It is an arithmetic number, because the mean of its divisors is an integer number (1298193640380).

Almost surely, 268247894137760 is an apocalyptic number.

68247894137760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68247894137760 is an abundant number, since it is smaller than the sum of its proper divisors (181005284815200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68247894137760 is a wasteful number, since it uses less digits than its factorization.

68247894137760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686874988 (or 686874974 counting only the distinct ones).

The product of its (nonzero) digits is 682795008, while the sum is 72.

The spelling of 68247894137760 in words is "sixty-eight trillion, two hundred forty-seven billion, eight hundred ninety-four million, one hundred thirty-seven thousand, seven hundred sixty".