20946230520 has 64 divisors (see below), whose sum is σ = 64300072320. Its totient is φ = 5455761024.

The previous prime is 20946230491. The next prime is 20946230527. The reversal of 20946230520 is 2503264902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20946230527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2024514 + ... + 2034833.

It is an arithmetic number, because the mean of its divisors is an integer number (1004688630).

Almost surely, 2^20946230520 is an apocalyptic number.

20946230520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20946230520 is an abundant number, since it is smaller than the sum of its proper divisors (43353841800).

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

20946230520 is a wasteful number, since it uses less digits than its factorization.

20946230520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059404 (or 4059400 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 20946230520 in words is "twenty billion, nine hundred forty-six million, two hundred thirty thousand, five hundred twenty".