11917394052 has 24 divisors (see below), whose sum is σ = 27809031936. Its totient is φ = 3972210528.

The previous prime is 11917394017. The next prime is 11917394059. The reversal of 11917394052 is 25049371911.

It is a junction number, because it is equal to n+sod(n) for n = 11917393995 and 11917394013.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315018 + ... + 350814.

It is an arithmetic number, because the mean of its divisors is an integer number (1158709664).

Almost surely, 2^11917394052 is an apocalyptic number.

11917394052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11917394052 is an abundant number, since it is smaller than the sum of its proper divisors (15891637884).

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

11917394052 is a wasteful number, since it uses less digits than its factorization.

11917394052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63547 (or 63545 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 11917394052 in words is "eleven billion, nine hundred seventeen million, three hundred ninety-four thousand, fifty-two".