20011515232 has 12 divisors (see below), whose sum is σ = 39397670676. Its totient is φ = 10005757600.

The previous prime is 20011515229. The next prime is 20011515259. The reversal of 20011515232 is 23251511002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312679894 + ... + 312679957.

It is an arithmetic number, because the mean of its divisors is an integer number (3283139223).

Almost surely, 2^20011515232 is an apocalyptic number.

It is an amenable number.

20011515232 is a deficient number, since it is larger than the sum of its proper divisors (19386155444).

20011515232 is an equidigital number, since it uses as much as digits as its factorization.

20011515232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625359861 (or 625359853 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The spelling of 20011515232 in words is "twenty billion, eleven million, five hundred fifteen thousand, two hundred thirty-two".