11549212572 has 12 divisors (see below), whose sum is σ = 26948162696. Its totient is φ = 3849737520.

The previous prime is 11549212517. The next prime is 11549212579. The reversal of 11549212572 is 27521294511.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×11549212572² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11549212572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11549212579) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 481217179 + ... + 481217202.

Almost surely, 2^11549212572 is an apocalyptic number.

11549212572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11549212572 is an abundant number, since it is smaller than the sum of its proper divisors (15398950124).

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

11549212572 is a wasteful number, since it uses less digits than its factorization.

11549212572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962434388 (or 962434386 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The spelling of 11549212572 in words is "eleven billion, five hundred forty-nine million, two hundred twelve thousand, five hundred seventy-two".