74881772456 has 64 divisors (see below), whose sum is σ = 147173544000. Its totient is φ = 35681748480.

The previous prime is 74881772437. The next prime is 74881772473. The reversal of 74881772456 is 65427718847.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a junction number, because it is equal to n+sod(n) for n = 74881772395 and 74881772404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4899755 + ... + 4915013.

It is an arithmetic number, because the mean of its divisors is an integer number (2299586625).

Almost surely, 2^74881772456 is an apocalyptic number.

It is an amenable number.

74881772456 is a deficient number, since it is larger than the sum of its proper divisors (72291771544).

74881772456 is a wasteful number, since it uses less digits than its factorization.

74881772456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15642 (or 15638 counting only the distinct ones).

The product of its digits is 21073920, while the sum is 59.

The spelling of 74881772456 in words is "seventy-four billion, eight hundred eighty-one million, seven hundred seventy-two thousand, four hundred fifty-six".