11526403780 has 12 divisors (see below), whose sum is σ = 24205447980. Its totient is φ = 4610561504.

The previous prime is 11526403753. The next prime is 11526403807. The reversal of 11526403780 is 8730462511.

It is an interprime number because it is at equal distance from previous prime (11526403753) and next prime (11526403807).

It can be written as a sum of positive squares in 2 ways, for example, as 6635079936 + 4891323844 = 81456^2 + 69938^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288160075 + ... + 288160114.

It is an arithmetic number, because the mean of its divisors is an integer number (2017120665).

Almost surely, 2^11526403780 is an apocalyptic number.

11526403780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11526403780 is an abundant number, since it is smaller than the sum of its proper divisors (12679044200).

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

11526403780 is a wasteful number, since it uses less digits than its factorization.

11526403780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576320198 (or 576320196 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 11526403780 in words is "eleven billion, five hundred twenty-six million, four hundred three thousand, seven hundred eighty".