15321322140 has 24 divisors (see below), whose sum is σ = 42899702160. Its totient is φ = 4085685888.

The previous prime is 15321322109. The next prime is 15321322153. The reversal of 15321322140 is 4122312351.

It is a self number, because there is not a number n which added to its sum of digits gives 15321322140.

It is a congruent number.

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, 127677625 + ... + 127677744.

It is an arithmetic number, because the mean of its divisors is an integer number (1787487590).

Almost surely, 2^15321322140 is an apocalyptic number.

15321322140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15321322140 is an abundant number, since it is smaller than the sum of its proper divisors (27578380020).

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

15321322140 is a wasteful number, since it uses less digits than its factorization.

15321322140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255355381 (or 255355379 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 15321322140 its reverse (4122312351), we get a palindrome (19443634491).

The spelling of 15321322140 in words is "fifteen billion, three hundred twenty-one million, three hundred twenty-two thousand, one hundred forty".