11571298956 has 48 divisors (see below), whose sum is σ = 34285332480. Its totient is φ = 3306085200.

The previous prime is 11571298951. The next prime is 11571298957. The reversal of 11571298956 is 65989217511.

It is a happy number.

11571298956 is a `hidden beast` number, since 11 + 571 + 2 + 9 + 8 + 9 + 56 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (11571298951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7652220 + ... + 7653731.

It is an arithmetic number, because the mean of its divisors is an integer number (714277760).

Almost surely, 2^11571298956 is an apocalyptic number.

It is an amenable number.

11571298956 is an abundant number, since it is smaller than the sum of its proper divisors (22714033524).

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

11571298956 is a wasteful number, since it uses less digits than its factorization.

11571298956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15305971 (or 15305963 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 54.

The spelling of 11571298956 in words is "eleven billion, five hundred seventy-one million, two hundred ninety-eight thousand, nine hundred fifty-six".