74365831556 has 6 divisors (see below), whose sum is σ = 130140205230. Its totient is φ = 37182915776.

The previous prime is 74365831537. The next prime is 74365831571. The reversal of 74365831556 is 65513856347.

It can be written as a sum of positive squares in only one way, i.e., 47509177156 + 26856654400 = 217966^2 + 163880^2 .

It is a super-2 number, since 2×74365831556² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74365831498 and 74365831507.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9295728941 + ... + 9295728948.

It is an arithmetic number, because the mean of its divisors is an integer number (21690034205).

Almost surely, 2^74365831556 is an apocalyptic number.

It is an amenable number.

74365831556 is a deficient number, since it is larger than the sum of its proper divisors (55774373674).

74365831556 is a wasteful number, since it uses less digits than its factorization.

74365831556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18591457893 (or 18591457891 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 53.

The spelling of 74365831556 in words is "seventy-four billion, three hundred sixty-five million, eight hundred thirty-one thousand, five hundred fifty-six".