15440502432 has 48 divisors (see below), whose sum is σ = 40689093312. Its totient is φ = 5126799360.

The previous prime is 15440502403. The next prime is 15440502443. The reversal of 15440502432 is 23420504451.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 15440502432.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288244 + ... + 337587.

It is an arithmetic number, because the mean of its divisors is an integer number (847689444).

Almost surely, 2^15440502432 is an apocalyptic number.

15440502432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15440502432 is an abundant number, since it is smaller than the sum of its proper divisors (25248590880).

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

15440502432 is a wasteful number, since it uses less digits than its factorization.

15440502432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626101 (or 626093 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 15440502432 in words is "fifteen billion, four hundred forty million, five hundred two thousand, four hundred thirty-two".