20331493776 has 100 divisors (see below), whose sum is σ = 64194854064. Its totient is φ = 6161054400.

The previous prime is 20331493733. The next prime is 20331493781. The reversal of 20331493776 is 67739413302.

It is a happy number.

20331493776 is a `hidden beast` number, since 203 + 31 + 49 + 377 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 698830 + ... + 727341.

Almost surely, 2^20331493776 is an apocalyptic number.

It is an amenable number.

20331493776 is an abundant number, since it is smaller than the sum of its proper divisors (43863360288).

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

20331493776 is a wasteful number, since it uses less digits than its factorization.

20331493776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426202 (or 1426187 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The spelling of 20331493776 in words is "twenty billion, three hundred thirty-one million, four hundred ninety-three thousand, seven hundred seventy-six".