185538866672 has 40 divisors (see below), whose sum is σ = 366301055232. Its totient is φ = 91020600000.

The previous prime is 185538866647. The next prime is 185538866687. The reversal of 185538866672 is 276668835581.

It is a junction number, because it is equal to n+sod(n) for n = 185538866599 and 185538866608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75704 + ... + 613847.

Almost surely, 2^185538866672 is an apocalyptic number.

It is an amenable number.

185538866672 is a deficient number, since it is larger than the sum of its proper divisors (180762188560).

185538866672 is a wasteful number, since it uses less digits than its factorization.

185538866672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689877 (or 689871 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 65.

The spelling of 185538866672 in words is "one hundred eighty-five billion, five hundred thirty-eight million, eight hundred sixty-six thousand, six hundred seventy-two".