15138765015 has 16 divisors (see below), whose sum is σ = 26424026496. Its totient is φ = 7340007200.

The previous prime is 15138764989. The next prime is 15138765079. The reversal of 15138765015 is 51056783151.

It is a happy number.

It is not a de Polignac number, because 15138765015 - 2¹⁴ = 15138748631 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 45874881 + ... + 45875210.

It is an arithmetic number, because the mean of its divisors is an integer number (1651501656).

Almost surely, 2^15138765015 is an apocalyptic number.

15138765015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15138765015 is a deficient number, since it is larger than the sum of its proper divisors (11285261481).

15138765015 is a wasteful number, since it uses less digits than its factorization.

15138765015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91750110.

The product of its (nonzero) digits is 126000, while the sum is 42.

The spelling of 15138765015 in words is "fifteen billion, one hundred thirty-eight million, seven hundred sixty-five thousand, fifteen".