11645075772 has 72 divisors (see below), whose sum is σ = 32473087920. Its totient is φ = 3489150720.

The previous prime is 11645075723. The next prime is 11645075807. The reversal of 11645075772 is 27757054611.

11645075772 is a `hidden beast` number, since 11 + 64 + 5 + 0 + 7 + 577 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129963 + ... + 200450.

It is an arithmetic number, because the mean of its divisors is an integer number (451015110).

Almost surely, 2^11645075772 is an apocalyptic number.

11645075772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11645075772 is an abundant number, since it is smaller than the sum of its proper divisors (20828012148).

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

11645075772 is a wasteful number, since it uses less digits than its factorization.

11645075772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330523 (or 330518 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 45.

The spelling of 11645075772 in words is "eleven billion, six hundred forty-five million, seventy-five thousand, seven hundred seventy-two".