6115520440 has 32 divisors (see below), whose sum is σ = 13765016880. Its totient is φ = 2445302272.

The previous prime is 6115520423. The next prime is 6115520441. The reversal of 6115520440 is 440255116.

It is a junction number, because it is equal to n+sod(n) for n = 6115520399 and 6115520408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6115520441) 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, 86832 + ... + 140608.

Almost surely, 2^6115520440 is an apocalyptic number.

It is an amenable number.

6115520440 is an abundant number, since it is smaller than the sum of its proper divisors (7649496440).

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

6115520440 is a wasteful number, since it uses less digits than its factorization.

6115520440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56631 (or 56627 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 6115520440 is about 78201.7930740722. The cubic root of 6115520440 is about 1828.7084599340.

Adding to 6115520440 its reverse (440255116), we get a palindrome (6555775556).

The spelling of 6115520440 in words is "six billion, one hundred fifteen million, five hundred twenty thousand, four hundred forty".