11681573928 has 32 divisors (see below), whose sum is σ = 29208320160. Its totient is φ = 3893273280.

The previous prime is 11681573879. The next prime is 11681573933. The reversal of 11681573928 is 82937518611.

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, 145026 + ... + 210702.

It is an arithmetic number, because the mean of its divisors is an integer number (912760005).

Almost surely, 2^11681573928 is an apocalyptic number.

It is an amenable number.

11681573928 is an abundant number, since it is smaller than the sum of its proper divisors (17526746232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11681573928 is a wasteful number, since it uses less digits than its factorization.

11681573928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73097 (or 73093 counting only the distinct ones).

The product of its digits is 725760, while the sum is 51.

The spelling of 11681573928 in words is "eleven billion, six hundred eighty-one million, five hundred seventy-three thousand, nine hundred twenty-eight".