11787879015 has 192 divisors, whose sum is σ = 24153292800. Its totient is φ = 5258131200.

The previous prime is 11787878989. The next prime is 11787879071. The reversal of 11787879015 is 51097878711.

It is not a de Polignac number, because 11787879015 - 2⁸ = 11787878759 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 84804816 + ... + 84804954.

It is an arithmetic number, because the mean of its divisors is an integer number (125798400).

Almost surely, 2^11787879015 is an apocalyptic number.

11787879015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11787879015 is an abundant number, since it is smaller than the sum of its proper divisors (12365413785).

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

11787879015 is a wasteful number, since it uses less digits than its factorization.

11787879015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 54.

The spelling of 11787879015 in words is "eleven billion, seven hundred eighty-seven million, eight hundred seventy-nine thousand, fifteen".