15113661506 has 8 divisors (see below), whose sum is σ = 23283208380. Its totient is φ = 7352592048.

The previous prime is 15113661503. The next prime is 15113661517. The reversal of 15113661506 is 60516631151.

It can be written as a sum of positive squares in 2 ways, for example, as 11813733481 + 3299928025 = 108691^2 + 57445^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15113661503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102119261 + ... + 102119408.

Almost surely, 2^15113661506 is an apocalyptic number.

15113661506 is a deficient number, since it is larger than the sum of its proper divisors (8169546874).

15113661506 is a wasteful number, since it uses less digits than its factorization.

15113661506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204238708.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 15113661506 in words is "fifteen billion, one hundred thirteen million, six hundred sixty-one thousand, five hundred six".