115566462440 has 128 divisors (see below), whose sum is σ = 305758696320. Its totient is φ = 38756582400.

The previous prime is 115566462371. The next prime is 115566462443. The reversal of 115566462440 is 44264665511.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 115566462391 and 115566462400.

It is not an unprimeable number, because it can be changed into a prime (115566462443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6781130 + ... + 6798150.

It is an arithmetic number, because the mean of its divisors is an integer number (2388739815).

Almost surely, 2^115566462440 is an apocalyptic number.

115566462440 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 115566462440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152879348160).

115566462440 is an abundant number, since it is smaller than the sum of its proper divisors (190192233880).

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

115566462440 is a wasteful number, since it uses less digits than its factorization.

115566462440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18243 (or 18239 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 115566462440 in words is "one hundred fifteen billion, five hundred sixty-six million, four hundred sixty-two thousand, four hundred forty".