68400367729587 has 12 divisors (see below), whose sum is σ = 98871153435600. Its totient is φ = 45567650258928.

The previous prime is 68400367729571. The next prime is 68400367729601. The reversal of 68400367729587 is 78592776300486.

68400367729587 is a `hidden beast` number, since 6 + 8 + 4 + 0 + 0 + 36 + 7 + 7 + 2 + 9 + 587 = 666.

It is not a de Polignac number, because 68400367729587 - 2⁴ = 68400367729571 is a prime.

It is a super-2 number, since 2×68400367729587² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68400367729517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2716227888 + ... + 2716253069.

It is an arithmetic number, because the mean of its divisors is an integer number (8239262786300).

Almost surely, 2^{68400367729587} is an apocalyptic number.

68400367729587 is a deficient number, since it is larger than the sum of its proper divisors (30470785706013).

68400367729587 is a wasteful number, since it uses less digits than its factorization.

68400367729587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432482362 (or 5432482359 counting only the distinct ones).

The product of its (nonzero) digits is 853493760, while the sum is 72.

The spelling of 68400367729587 in words is "sixty-eight trillion, four hundred billion, three hundred sixty-seven million, seven hundred twenty-nine thousand, five hundred eighty-seven".