11621432661215 has 32 divisors (see below), whose sum is σ = 15256912507200. Its totient is φ = 8497010121600.

The previous prime is 11621432661187. The next prime is 11621432661217. The reversal of 11621432661215 is 51216623412611.

It is not a de Polignac number, because 11621432661215 - 2³⁰ = 11620358919391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621432661217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4127825 + ... + 6346794.

It is an arithmetic number, because the mean of its divisors is an integer number (476778515850).

Almost surely, 2^{11621432661215} is an apocalyptic number.

11621432661215 is a deficient number, since it is larger than the sum of its proper divisors (3635479845985).

11621432661215 is a wasteful number, since it uses less digits than its factorization.

11621432661215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10474764 (or 10474738 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The spelling of 11621432661215 in words is "eleven trillion, six hundred twenty-one billion, four hundred thirty-two million, six hundred sixty-one thousand, two hundred fifteen".