11621516654331 has 48 divisors (see below), whose sum is σ = 18172614759936. Its totient is φ = 7407816710976.

The previous prime is 11621516654317. The next prime is 11621516654369. The reversal of 11621516654331 is 13345661512611.

11621516654331 is a `hidden beast` number, since 1 + 1 + 6 + 2 + 1 + 516 + 65 + 43 + 31 = 666.

It is not a de Polignac number, because 11621516654331 - 2¹⁹ = 11621516130043 is a prime.

It is a super-2 number, since 2×11621516654331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11621516654311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13401186 + ... + 14242008.

It is an arithmetic number, because the mean of its divisors is an integer number (378596140832).

Almost surely, 2^{11621516654331} is an apocalyptic number.

11621516654331 is a deficient number, since it is larger than the sum of its proper divisors (6551098105605).

11621516654331 is an equidigital number, since it uses as much as digits as its factorization.

11621516654331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843334 (or 843322 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The spelling of 11621516654331 in words is "eleven trillion, six hundred twenty-one billion, five hundred sixteen million, six hundred fifty-four thousand, three hundred thirty-one".