915662521536 has 112 divisors (see below), whose sum is σ = 2770993370880. Its totient is φ = 261409582080.

The previous prime is 915662521519. The next prime is 915662521583. The reversal of 915662521536 is 635125266519.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1421526 + ... + 1962666.

It is an arithmetic number, because the mean of its divisors is an integer number (24741012240).

Almost surely, 2^915662521536 is an apocalyptic number.

915662521536 is a gapful number since it is divisible by the number (96) 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 915662521536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1385496685440).

915662521536 is an abundant number, since it is smaller than the sum of its proper divisors (1855330849344).

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

915662521536 is a wasteful number, since it uses less digits than its factorization.

915662521536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542422 (or 542412 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 51.

The spelling of 915662521536 in words is "nine hundred fifteen billion, six hundred sixty-two million, five hundred twenty-one thousand, five hundred thirty-six".