20624732166 has 32 divisors (see below), whose sum is σ = 41422727808. Its totient is φ = 6846076800.

The previous prime is 20624732147. The next prime is 20624732179. The reversal of 20624732166 is 66123742602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2207581 + ... + 2216903.

It is an arithmetic number, because the mean of its divisors is an integer number (1294460244).

Almost surely, 2^20624732166 is an apocalyptic number.

20624732166 is an abundant number, since it is smaller than the sum of its proper divisors (20797995642).

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

20624732166 is a wasteful number, since it uses less digits than its factorization.

20624732166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10836.

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 20624732166 in words is "twenty billion, six hundred twenty-four million, seven hundred thirty-two thousand, one hundred sixty-six".