11621135616 has 36 divisors (see below), whose sum is σ = 30929170272. Its totient is φ = 3873711616.

The previous prime is 11621135611. The next prime is 11621135663. The reversal of 11621135616 is 61653112611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621135611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7565076 + ... + 7566611.

Almost surely, 2^11621135616 is an apocalyptic number.

11621135616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11621135616 is an abundant number, since it is smaller than the sum of its proper divisors (19308034656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11621135616 is an equidigital number, since it uses as much as digits as its factorization.

11621135616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15131706 (or 15131692 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The spelling of 11621135616 in words is "eleven billion, six hundred twenty-one million, one hundred thirty-five thousand, six hundred sixteen".