15231979268 has 24 divisors (see below), whose sum is σ = 29755498080. Its totient is φ = 6762611520.

The previous prime is 15231979267. The next prime is 15231979283. The reversal of 15231979268 is 86297913251.

15231979268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (15231979267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4023473 + ... + 4027256.

It is an arithmetic number, because the mean of its divisors is an integer number (1239812420).

Almost surely, 2^15231979268 is an apocalyptic number.

It is an amenable number.

15231979268 is a deficient number, since it is larger than the sum of its proper divisors (14523518812).

15231979268 is a wasteful number, since it uses less digits than its factorization.

15231979268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050787 (or 8050785 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 53.

It can be divided in two parts, 15231 and 979268, that added together give a palindrome (994499).

The spelling of 15231979268 in words is "fifteen billion, two hundred thirty-one million, nine hundred seventy-nine thousand, two hundred sixty-eight".