11937128440 has 16 divisors (see below), whose sum is σ = 26858539080. Its totient is φ = 4774851360.

The previous prime is 11937128417. The next prime is 11937128507. The reversal of 11937128440 is 4482173911.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 298428211 = 11937128440 / (1 + 1 + 9 + 3 + 7 + 1 + 2 + 8 + 4 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 11937128393 and 11937128402.

It is a congruent number.

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, 149214066 + ... + 149214145.

Almost surely, 2^11937128440 is an apocalyptic number.

11937128440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11937128440 is an abundant number, since it is smaller than the sum of its proper divisors (14921410640).

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

11937128440 is a wasteful number, since it uses less digits than its factorization.

11937128440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298428222 (or 298428218 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 11937128440 in words is "eleven billion, nine hundred thirty-seven million, one hundred twenty-eight thousand, four hundred forty".