20157513860 has 48 divisors (see below), whose sum is σ = 46610665920. Its totient is φ = 7261491840.

The previous prime is 20157513823. The next prime is 20157513863. The reversal of 20157513860 is 6831575102.

It is not an unprimeable number, because it can be changed into a prime (20157513863) 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, 404615 + ... + 451694.

It is an arithmetic number, because the mean of its divisors is an integer number (971055540).

Almost surely, 2^20157513860 is an apocalyptic number.

20157513860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20157513860 is an abundant number, since it is smaller than the sum of its proper divisors (26453152060).

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

20157513860 is a wasteful number, since it uses less digits than its factorization.

20157513860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856436 (or 856434 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 20157513860 in words is "twenty billion, one hundred fifty-seven million, five hundred thirteen thousand, eight hundred sixty".