11387523720 has 32 divisors (see below), whose sum is σ = 34162571520. Its totient is φ = 3036672960.

The previous prime is 11387523701. The next prime is 11387523727. The reversal of 11387523720 is 2732578311.

It is not an unprimeable number, because it can be changed into a prime (11387523727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47447896 + ... + 47448135.

It is an arithmetic number, because the mean of its divisors is an integer number (1067580360).

Almost surely, 2^11387523720 is an apocalyptic number.

11387523720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11387523720 is an abundant number, since it is smaller than the sum of its proper divisors (22775047800).

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

11387523720 is a wasteful number, since it uses less digits than its factorization.

11387523720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94896045 (or 94896041 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 11387523720 in words is "eleven billion, three hundred eighty-seven million, five hundred twenty-three thousand, seven hundred twenty".