20366722520 has 48 divisors (see below), whose sum is σ = 47097242640. Its totient is φ = 7926486912.

The previous prime is 20366722501. The next prime is 20366722543. The reversal of 20366722520 is 2522766302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131204 + ... + 240723.

It is an arithmetic number, because the mean of its divisors is an integer number (981192555).

Almost surely, 2^20366722520 is an apocalyptic number.

20366722520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20366722520 is an abundant number, since it is smaller than the sum of its proper divisors (26730520120).

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

20366722520 is a wasteful number, since it uses less digits than its factorization.

20366722520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372012 (or 371971 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 20366722520 in words is "twenty billion, three hundred sixty-six million, seven hundred twenty-two thousand, five hundred twenty".