99560918640 has 160 divisors (see below), whose sum is σ = 310740468480. Its totient is φ = 26369394688.

The previous prime is 99560918629. The next prime is 99560918651. The reversal of 99560918640 is 4681906599.

99560918640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (99560918629) and next prime (99560918651).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24770551 + ... + 24774569.

It is an arithmetic number, because the mean of its divisors is an integer number (1942127928).

Almost surely, 2^99560918640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99560918640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155370234240).

99560918640 is an abundant number, since it is smaller than the sum of its proper divisors (211179549840).

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

99560918640 is a wasteful number, since it uses less digits than its factorization.

99560918640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711 (or 4705 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 99560918640 in words is "ninety-nine billion, five hundred sixty million, nine hundred eighteen thousand, six hundred forty".