15657429120 has 128 divisors (see below), whose sum is σ = 51257154240. Its totient is φ = 4062449664.

The previous prime is 15657429119. The next prime is 15657429127. The reversal of 15657429120 is 2192475651.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (15657429127) 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, 39162 + ... + 181241.

Almost surely, 2^15657429120 is an apocalyptic number.

15657429120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15657429120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25628577120).

15657429120 is an abundant number, since it is smaller than the sum of its proper divisors (35599725120).

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

15657429120 is a wasteful number, since it uses less digits than its factorization.

15657429120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220462 (or 220450 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 15657429120 in words is "fifteen billion, six hundred fifty-seven million, four hundred twenty-nine thousand, one hundred twenty".