15128763870 has 128 divisors (see below), whose sum is σ = 42822120960. Its totient is φ = 3380590080.

The previous prime is 15128763847. The next prime is 15128763901. The reversal of 15128763870 is 7836782151.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199384 + ... + 264596.

It is an arithmetic number, because the mean of its divisors is an integer number (334547820).

Almost surely, 2^15128763870 is an apocalyptic number.

15128763870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15128763870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21411060480).

15128763870 is an abundant number, since it is smaller than the sum of its proper divisors (27693357090).

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

15128763870 is a wasteful number, since it uses less digits than its factorization.

15128763870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65290.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 15128763870 in words is "fifteen billion, one hundred twenty-eight million, seven hundred sixty-three thousand, eight hundred seventy".