11623551551615 has 16 divisors (see below), whose sum is σ = 13994595215328. Its totient is φ = 9267971844096.

The previous prime is 11623551551597. The next prime is 11623551551681. The reversal of 11623551551615 is 51615515532611.

It is a cyclic number.

It is not a de Polignac number, because 11623551551615 - 2²⁰ = 11623550503039 is a prime.

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 11623551551615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3556124 + ... + 5991086.

It is an arithmetic number, because the mean of its divisors is an integer number (874662200958).

Almost surely, 2^{11623551551615} is an apocalyptic number.

11623551551615 is a deficient number, since it is larger than the sum of its proper divisors (2371043663713).

11623551551615 is a wasteful number, since it uses less digits than its factorization.

11623551551615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438138.

The product of its digits is 675000, while the sum is 47.

The spelling of 11623551551615 in words is "eleven trillion, six hundred twenty-three billion, five hundred fifty-one million, five hundred fifty-one thousand, six hundred fifteen".