11917817610 has 32 divisors (see below), whose sum is σ = 28608560640. Its totient is φ = 3177440448.

The previous prime is 11917817551. The next prime is 11917817633. The reversal of 11917817610 is 1671871911.

It is a super-2 number, since 2×11917817610² (a number of 21 digits) contains 22 as substring.

It is a Curzon 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, 120744 + ... + 195996.

It is an arithmetic number, because the mean of its divisors is an integer number (894017520).

Almost surely, 2^11917817610 is an apocalyptic number.

11917817610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11917817610 is an abundant number, since it is smaller than the sum of its proper divisors (16690743030).

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

11917817610 is a wasteful number, since it uses less digits than its factorization.

11917817610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80542.

The product of its (nonzero) digits is 21168, while the sum is 42.

The spelling of 11917817610 in words is "eleven billion, nine hundred seventeen million, eight hundred seventeen thousand, six hundred ten".