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68986629744 = 2431437221453
BaseRepresentation
bin100000000111111101…
…1000110111001110000
320121001210111220012220
41000033323012321300
52112241034122434
651405250521040
74661360451264
oct1001773067160
9217053456186
1068986629744
1127291176a9a
1211453596180
136675508896
1434a61c80a4
151bdb68cd49
hex100fec6e70

68986629744 has 20 divisors (see below), whose sum is σ = 178215460296. Its totient is φ = 22995543232.

The previous prime is 68986629739. The next prime is 68986629773. The reversal of 68986629744 is 44792668986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718610679 + ... + 718610774.

Almost surely, 268986629744 is an apocalyptic number.

It is an amenable number.

68986629744 is an abundant number, since it is smaller than the sum of its proper divisors (109228830552).

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

68986629744 is a wasteful number, since it uses less digits than its factorization.

68986629744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437221464 (or 1437221458 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 69.

The spelling of 68986629744 in words is "sixty-eight billion, nine hundred eighty-six million, six hundred twenty-nine thousand, seven hundred forty-four".

Divisors: 1 2 3 4 6 8 12 16 24 48 1437221453 2874442906 4311664359 5748885812 8623328718 11497771624 17246657436 22995543248 34493314872 68986629744