15440532852 has 24 divisors (see below), whose sum is σ = 36073136736. Its totient is φ = 5140383328.

The previous prime is 15440532839. The next prime is 15440532859. The reversal of 15440532852 is 25823504451.

It is a self number, because there is not a number n which added to its sum of digits gives 15440532852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15440532859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797658 + ... + 816785.

It is an arithmetic number, because the mean of its divisors is an integer number (1503047364).

Almost surely, 2^15440532852 is an apocalyptic number.

15440532852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15440532852 is an abundant number, since it is smaller than the sum of its proper divisors (20632603884).

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

15440532852 is a wasteful number, since it uses less digits than its factorization.

15440532852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615247 (or 1615245 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 15440532852 in words is "fifteen billion, four hundred forty million, five hundred thirty-two thousand, eight hundred fifty-two".