11537387240 has 16 divisors (see below), whose sum is σ = 25959121380. Its totient is φ = 4614954880.

The previous prime is 11537387219. The next prime is 11537387311. The reversal of 11537387240 is 4278373511.

It can be written as a sum of positive squares in 2 ways, for example, as 11345232196 + 192155044 = 106514^2 + 13862^2 .

It is a super-2 number, since 2×11537387240² (a number of 21 digits) contains 22 as substring.

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, 144217301 + ... + 144217380.

Almost surely, 2^11537387240 is an apocalyptic number.

11537387240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11537387240 is an abundant number, since it is smaller than the sum of its proper divisors (14421734140).

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

11537387240 is a wasteful number, since it uses less digits than its factorization.

11537387240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288434692 (or 288434688 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 11537387240 in words is "eleven billion, five hundred thirty-seven million, three hundred eighty-seven thousand, two hundred forty".