11072512521 has 24 divisors (see below), whose sum is σ = 18724253184. Its totient is φ = 6172827840.

The previous prime is 11072512499. The next prime is 11072512567. The reversal of 11072512521 is 12521527011.

11072512521 is a `hidden beast` number, since 1 + 107 + 25 + 12 + 521 = 666.

It is not a de Polignac number, because 11072512521 - 2⁵ = 11072512489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11072532521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2140761 + ... + 2145926.

It is an arithmetic number, because the mean of its divisors is an integer number (780177216).

Almost surely, 2^11072512521 is an apocalyptic number.

It is an amenable number.

11072512521 is a deficient number, since it is larger than the sum of its proper divisors (7651740663).

11072512521 is a wasteful number, since it uses less digits than its factorization.

11072512521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286741 (or 4286738 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The spelling of 11072512521 in words is "eleven billion, seventy-two million, five hundred twelve thousand, five hundred twenty-one".