11917394051 has 8 divisors (see below), whose sum is σ = 12133442640. Its totient is φ = 11702468448.

The previous prime is 11917394017. The next prime is 11917394059. The reversal of 11917394051 is 15049371911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11917394051 - 2¹⁰ = 11917393027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11917394059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259316 + ... + 301793.

It is an arithmetic number, because the mean of its divisors is an integer number (1516680330).

Almost surely, 2^11917394051 is an apocalyptic number.

11917394051 is a deficient number, since it is larger than the sum of its proper divisors (216048589).

11917394051 is an equidigital number, since it uses as much as digits as its factorization.

11917394051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561493.

The product of its (nonzero) digits is 34020, while the sum is 41.

The spelling of 11917394051 in words is "eleven billion, nine hundred seventeen million, three hundred ninety-four thousand, fifty-one".