11939685390 has 64 divisors (see below), whose sum is σ = 31849977600. Its totient is φ = 3182834592.

The previous prime is 11939685389. The next prime is 11939685397. The reversal of 11939685390 is 9358693911.

11939685390 is a `hidden beast` number, since 1 + 1 + 93 + 96 + 85 + 390 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11939685397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1079629 + ... + 1090631.

It is an arithmetic number, because the mean of its divisors is an integer number (497655900).

Almost surely, 2^11939685390 is an apocalyptic number.

11939685390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11939685390 is an abundant number, since it is smaller than the sum of its proper divisors (19910292210).

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

11939685390 is a wasteful number, since it uses less digits than its factorization.

11939685390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15038 (or 15032 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 54.

The spelling of 11939685390 in words is "eleven billion, nine hundred thirty-nine million, six hundred eighty-five thousand, three hundred ninety".