115810651440 has 480 divisors, whose sum is σ = 432047775744. Its totient is φ = 27565608960.

The previous prime is 115810651421. The next prime is 115810651457. The reversal of 115810651440 is 44156018511.

115810651440 is a `hidden beast` number, since 1 + 1 + 581 + 0 + 65 + 14 + 4 + 0 = 666.

115810651440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 115810651395 and 115810651404.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 221435019 + ... + 221435541.

Almost surely, 2^115810651440 is an apocalyptic number.

115810651440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115810651440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216023887872).

115810651440 is an abundant number, since it is smaller than the sum of its proper divisors (316237124304).

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

115810651440 is a wasteful number, since it uses less digits than its factorization.

115810651440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

Adding to 115810651440 its reverse (44156018511), we get a palindrome (159966669951).

The spelling of 115810651440 in words is "one hundred fifteen billion, eight hundred ten million, six hundred fifty-one thousand, four hundred forty".