11617211816 has 16 divisors (see below), whose sum is σ = 24894025440. Its totient is φ = 4978805040.

The previous prime is 11617211797. The next prime is 11617211833. The reversal of 11617211816 is 61811271611.

It is a super-2 number, since 2×11617211816² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103725050 + ... + 103725161.

It is an arithmetic number, because the mean of its divisors is an integer number (1555876590).

Almost surely, 2^11617211816 is an apocalyptic number.

It is an amenable number.

11617211816 is an abundant number, since it is smaller than the sum of its proper divisors (13276813624).

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

11617211816 is a wasteful number, since it uses less digits than its factorization.

11617211816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207450224 (or 207450220 counting only the distinct ones).

The product of its digits is 4032, while the sum is 35.

The spelling of 11617211816 in words is "eleven billion, six hundred seventeen million, two hundred eleven thousand, eight hundred sixteen".