11521206552 has 64 divisors (see below), whose sum is σ = 30353045760. Its totient is φ = 3637040000.

The previous prime is 11521206509. The next prime is 11521206553. The reversal of 11521206552 is 25560212511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11521206553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47574 + ... + 159077.

It is an arithmetic number, because the mean of its divisors is an integer number (474266340).

Almost surely, 2^11521206552 is an apocalyptic number.

11521206552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11521206552 is an abundant number, since it is smaller than the sum of its proper divisors (18831839208).

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

11521206552 is a wasteful number, since it uses less digits than its factorization.

11521206552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206784 (or 206780 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 11521206552 in words is "eleven billion, five hundred twenty-one million, two hundred six thousand, five hundred fifty-two".