115566156450 has 36 divisors (see below), whose sum is σ = 310487741538. Its totient is φ = 30817641600.

The previous prime is 115566156439. The next prime is 115566156467. The reversal of 115566156450 is 54651665511.

115566156450 is a `hidden beast` number, since 1 + 1 + 556 + 6 + 1 + 56 + 45 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 78887395161 + 36678761289 = 280869^2 + 191517^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 115566156396 and 115566156405.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 128406391 + ... + 128407290.

Almost surely, 2^115566156450 is an apocalyptic number.

115566156450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115566156450 is an abundant number, since it is smaller than the sum of its proper divisors (194921585088).

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

115566156450 is a wasteful number, since it uses less digits than its factorization.

115566156450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256813699 (or 256813691 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 115566156450 in words is "one hundred fifteen billion, five hundred sixty-six million, one hundred fifty-six thousand, four hundred fifty".