11974920615 has 192 divisors, whose sum is σ = 26202009600. Its totient is φ = 5037419520.

The previous prime is 11974920599. The next prime is 11974920619. The reversal of 11974920615 is 51602947911.

11974920615 is a `hidden beast` number, since 1 + 1 + 9 + 7 + 4 + 9 + 20 + 615 = 666.

11974920615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11974920615 - 2⁴ = 11974920599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11974920619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 12332080 + ... + 12333050.

It is an arithmetic number, because the mean of its divisors is an integer number (136468800).

Almost surely, 2^11974920615 is an apocalyptic number.

11974920615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11974920615 is an abundant number, since it is smaller than the sum of its proper divisors (14227088985).

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

11974920615 is a wasteful number, since it uses less digits than its factorization.

11974920615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 11974920615 in words is "eleven billion, nine hundred seventy-four million, nine hundred twenty thousand, six hundred fifteen".