11717420765 has 64 divisors (see below), whose sum is σ = 15736135680. Its totient is φ = 8335872000.

The previous prime is 11717420753. The next prime is 11717420779. The reversal of 11717420765 is 56702471711.

It is not a de Polignac number, because 11717420765 - 2⁸ = 11717420509 is a prime.

It is a super-3 number, since 3×11717420765³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43237580 + ... + 43237850.

It is an arithmetic number, because the mean of its divisors is an integer number (245877120).

Almost surely, 2^11717420765 is an apocalyptic number.

It is an amenable number.

11717420765 is a deficient number, since it is larger than the sum of its proper divisors (4018714915).

11717420765 is a wasteful number, since it uses less digits than its factorization.

11717420765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654.

The product of its (nonzero) digits is 82320, while the sum is 41.

The spelling of 11717420765 in words is "eleven billion, seven hundred seventeen million, four hundred twenty thousand, seven hundred sixty-five".