15244593961 has 27 divisors (see below), whose sum is σ = 16236837687. Its totient is φ = 14312526480.

The previous prime is 15244593953. The next prime is 15244593979. The reversal of 15244593961 is 16939544251.

The square root of 15244593961 is 123469.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13641072025 + 1603521936 = 116795^2 + 40044^2 .

It is not a de Polignac number, because 15244593961 - 2³ = 15244593953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15244593941) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 214712556 + ... + 214712626.

Almost surely, 2^15244593961 is an apocalyptic number.

15244593961 is the 123469-th square number.

15244593961 is the 61735-th centered octagonal number.

It is an amenable number.

15244593961 is a deficient number, since it is larger than the sum of its proper divisors (992243726).

15244593961 is an frugal number, since it uses more digits than its factorization.

15244593961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 155 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 49.

Multiplying 15244593961 by its sum of digits (49), we get a square (746985104089 = 864283²).

The spelling of 15244593961 in words is "fifteen billion, two hundred forty-four million, five hundred ninety-three thousand, nine hundred sixty-one".