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68514557901 = 326386837209
BaseRepresentation
bin111111110011110010…
…010010111111001101
320112211220020011101120
4333303302102333031
52110304211323101
651250344431153
74643566063446
oct776362227715
9215756204346
1068514557901
1127069755479
12113414784b9
1365cb78172a
14345d6222cd
151baeedeb36
hexff3c92fcd

68514557901 has 8 divisors (see below), whose sum is σ = 91700093760. Its totient is φ = 45502696992.

The previous prime is 68514557849. The next prime is 68514557963. The reversal of 68514557901 is 10975541586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68514557901 - 218 = 68514295757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68514537901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43417816 + ... + 43419393.

It is an arithmetic number, because the mean of its divisors is an integer number (11462511720).

Almost surely, 268514557901 is an apocalyptic number.

It is an amenable number.

68514557901 is a deficient number, since it is larger than the sum of its proper divisors (23185535859).

68514557901 is a wasteful number, since it uses less digits than its factorization.

68514557901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86837475.

The product of its (nonzero) digits is 1512000, while the sum is 51.

The spelling of 68514557901 in words is "sixty-eight billion, five hundred fourteen million, five hundred fifty-seven thousand, nine hundred one".

Divisors: 1 3 263 789 86837209 260511627 22838185967 68514557901