15765601040 has 120 divisors (see below), whose sum is σ = 43547248512. Its totient is φ = 5290279680.

The previous prime is 15765601031. The next prime is 15765601067. The reversal of 15765601040 is 4010656751.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141455 + ... + 227025.

Almost surely, 2^15765601040 is an apocalyptic number.

15765601040 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 15765601040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21773624256).

15765601040 is an abundant number, since it is smaller than the sum of its proper divisors (27781647472).

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

15765601040 is a wasteful number, since it uses less digits than its factorization.

15765601040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85645 (or 85632 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 15765601040 in words is "fifteen billion, seven hundred sixty-five million, six hundred one thousand, forty".