74644856864 has 24 divisors (see below), whose sum is σ = 146968170048. Its totient is φ = 37319607360.

The previous prime is 74644856833. The next prime is 74644856899. The reversal of 74644856864 is 46865844647.

It is a junction number, because it is equal to n+sod(n) for n = 74644856797 and 74644856806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380069 + ... + 541979.

It is an arithmetic number, because the mean of its divisors is an integer number (6123673752).

Almost surely, 2^74644856864 is an apocalyptic number.

It is an amenable number.

74644856864 is a deficient number, since it is larger than the sum of its proper divisors (72323313184).

74644856864 is a wasteful number, since it uses less digits than its factorization.

74644856864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176328 (or 176320 counting only the distinct ones).

The product of its digits is 123863040, while the sum is 62.

The spelling of 74644856864 in words is "seventy-four billion, six hundred forty-four million, eight hundred fifty-six thousand, eight hundred sixty-four".