915397892240 has 160 divisors (see below), whose sum is σ = 2375427962880. Its totient is φ = 325735667712.

The previous prime is 915397892237. The next prime is 915397892273. The reversal of 915397892240 is 42298793519.

It is a super-2 number, since 2×915397892240² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 915397892240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16469777 + ... + 16525263.

It is an arithmetic number, because the mean of its divisors is an integer number (14846424768).

Almost surely, 2^915397892240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 915397892240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187713981440).

915397892240 is an abundant number, since it is smaller than the sum of its proper divisors (1460030070640).

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

915397892240 is a wasteful number, since it uses less digits than its factorization.

915397892240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56089 (or 56083 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 915397892240 in words is "nine hundred fifteen billion, three hundred ninety-seven million, eight hundred ninety-two thousand, two hundred forty".