74085456681 has 16 divisors (see below), whose sum is σ = 110045841600. Its totient is φ = 49259980224.

The previous prime is 74085456667. The next prime is 74085456703. The reversal of 74085456681 is 18665458047.

74085456681 is a `hidden beast` number, since 74 + 0 + 8 + 5 + 4 + 566 + 8 + 1 = 666.

It is not a de Polignac number, because 74085456681 - 2⁵ = 74085456649 is a prime.

It is a super-2 number, since 2×74085456681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74085456631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3609696 + ... + 3630161.

It is an arithmetic number, because the mean of its divisors is an integer number (6877865100).

Almost surely, 2^74085456681 is an apocalyptic number.

It is an amenable number.

74085456681 is a deficient number, since it is larger than the sum of its proper divisors (35960384919).

74085456681 is a wasteful number, since it uses less digits than its factorization.

74085456681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7240245 (or 7240239 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 74085456681 in words is "seventy-four billion, eighty-five million, four hundred fifty-six thousand, six hundred eighty-one".