15964265000 has 80 divisors (see below), whose sum is σ = 37448403300. Its totient is φ = 6378176000.

The previous prime is 15964264969. The next prime is 15964265027. The reversal of 15964265000 is 56246951.

It can be written as a sum of positive squares in 10 ways, for example, as 209496676 + 15754768324 = 14474^2 + 125518^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6443762 + ... + 6446238.

Almost surely, 2^15964265000 is an apocalyptic number.

15964265000 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 15964265000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18724201650).

15964265000 is an abundant number, since it is smaller than the sum of its proper divisors (21484138300).

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

15964265000 is a wasteful number, since it uses less digits than its factorization.

15964265000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792 (or 3773 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 15964265000 in words is "fifteen billion, nine hundred sixty-four million, two hundred sixty-five thousand".