13151961124 has 27 divisors (see below), whose sum is σ = 24456700947. Its totient is φ = 6187323264.

The previous prime is 13151961089. The next prime is 13151961127. The reversal of 13151961124 is 42116915131.

It is a happy number.

The square root of 13151961124 is 114682.

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

It can be written as a sum of positive squares in 4 ways, for example, as 9040586724 + 4111374400 = 95082^2 + 64120^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13151961124.

It is not an unprimeable number, because it can be changed into a prime (13151961127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3897502 + ... + 3900874.

Almost surely, 2^13151961124 is an apocalyptic number.

13151961124 is the 114682-nd square number.

It is an amenable number.

13151961124 is a deficient number, since it is larger than the sum of its proper divisors (11304739823).

13151961124 is an frugal number, since it uses more digits than its factorization.

13151961124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6784 (or 3392 counting only the distinct ones).

The product of its digits is 6480, while the sum is 34.

The spelling of 13151961124 in words is "thirteen billion, one hundred fifty-one million, nine hundred sixty-one thousand, one hundred twenty-four".