11521242510 has 64 divisors (see below), whose sum is σ = 27831997440. Its totient is φ = 3052287360.

The previous prime is 11521242427. The next prime is 11521242517. The reversal of 11521242510 is 1524212511.

It is a happy number.

It is a super-2 number, since 2×11521242510² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11521242517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3160749 + ... + 3164391.

It is an arithmetic number, because the mean of its divisors is an integer number (434874960).

Almost surely, 2^11521242510 is an apocalyptic number.

11521242510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11521242510 is an abundant number, since it is smaller than the sum of its proper divisors (16310754930).

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

11521242510 is a wasteful number, since it uses less digits than its factorization.

11521242510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313.

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 11521242510 in words is "eleven billion, five hundred twenty-one million, two hundred forty-two thousand, five hundred ten".