15129655320 has 128 divisors (see below), whose sum is σ = 49920675840. Its totient is φ = 3644966400.

The previous prime is 15129655253. The next prime is 15129655351. The reversal of 15129655320 is 2355692151.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29856 + ... + 176495.

It is an arithmetic number, because the mean of its divisors is an integer number (390005280).

Almost surely, 2^15129655320 is an apocalyptic number.

15129655320 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 15129655320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24960337920).

15129655320 is an abundant number, since it is smaller than the sum of its proper divisors (34791020520).

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

15129655320 is a wasteful number, since it uses less digits than its factorization.

15129655320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206425 (or 206421 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 15129655320 in words is "fifteen billion, one hundred twenty-nine million, six hundred fifty-five thousand, three hundred twenty".