15156991814 has 16 divisors (see below), whose sum is σ = 22849558368. Its totient is φ = 7540549632.

The previous prime is 15156991813. The next prime is 15156991841. The reversal of 15156991814 is 41819965151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15156991813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383942 + ... + 421574.

It is an arithmetic number, because the mean of its divisors is an integer number (1428097398).

Almost surely, 2^15156991814 is an apocalyptic number.

15156991814 is a deficient number, since it is larger than the sum of its proper divisors (7692566554).

15156991814 is a wasteful number, since it uses less digits than its factorization.

15156991814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38639.

The product of its digits is 388800, while the sum is 50.

The spelling of 15156991814 in words is "fifteen billion, one hundred fifty-six million, nine hundred ninety-one thousand, eight hundred fourteen".