15274940691 has 16 divisors (see below), whose sum is σ = 21609676800. Its totient is φ = 9564252288.

The previous prime is 15274940687. The next prime is 15274940717. The reversal of 15274940691 is 19604947251.

It is a happy number.

15274940691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15274940691 - 2² = 15274940687 is a prime.

It is a super-2 number, since 2×15274940691² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15274940691.

It is not an unprimeable number, because it can be changed into a prime (15274942691) 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 15 ways as a sum of consecutive naturals, for example, 288211 + ... + 337068.

It is an arithmetic number, because the mean of its divisors is an integer number (1350604800).

Almost surely, 2^15274940691 is an apocalyptic number.

15274940691 is a deficient number, since it is larger than the sum of its proper divisors (6334736109).

15274940691 is a wasteful number, since it uses less digits than its factorization.

15274940691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625778.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 15274940691 in words is "fifteen billion, two hundred seventy-four million, nine hundred forty thousand, six hundred ninety-one".