15142947263236 has 135 divisors (see below), whose sum is σ = 29807590296939. Its totient is φ = 6731053160832.

The previous prime is 15142947263231. The next prime is 15142947263303. The reversal of 15142947263236 is 63236274924151.

It is a happy number.

The square root of 15142947263236 is 3891394.

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

It can be written as a sum of positive squares in 22 ways, for example, as 10550738276100 + 4592208987136 = 3248190^2 + 2142944^2 .

It is not an unprimeable number, because it can be changed into a prime (15142947263231) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 38143443790 + ... + 38143444186.

Almost surely, 2^{15142947263236} is an apocalyptic number.

15142947263236 is the 3891394-th square number.

It is an amenable number.

15142947263236 is a deficient number, since it is larger than the sum of its proper divisors (14664643033703).

15142947263236 is an frugal number, since it uses more digits than its factorization.

15142947263236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908 (or 441 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 55.

The spelling of 15142947263236 in words is "fifteen trillion, one hundred forty-two billion, nine hundred forty-seven million, two hundred sixty-three thousand, two hundred thirty-six".