115561952208 has 100 divisors (see below), whose sum is σ = 334922768928. Its totient is φ = 38468485440.

The previous prime is 115561952201. The next prime is 115561952239. The reversal of 115561952208 is 802259165511.

115561952208 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 619 + 5 + 2 + 20 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115561952201) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 902923 + ... + 1022933.

Almost surely, 2^115561952208 is an apocalyptic number.

115561952208 is a gapful number since it is divisible by the number (18) 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 115561952208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167461384464).

115561952208 is an abundant number, since it is smaller than the sum of its proper divisors (219360816720).

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

115561952208 is a wasteful number, since it uses less digits than its factorization.

115561952208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120774 (or 120759 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 45.

The spelling of 115561952208 in words is "one hundred fifteen billion, five hundred sixty-one million, nine hundred fifty-two thousand, two hundred eight".