80642045700 has 216 divisors, whose sum is σ = 264026101248. Its totient is φ = 20548661760.

The previous prime is 80642045657. The next prime is 80642045707. The reversal of 80642045700 is 754024608.

80642045700 is a `hidden beast` number, since 8 + 0 + 64 + 20 + 4 + 570 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (80642045707) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 37735032 + ... + 37737168.

Almost surely, 2^80642045700 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 80642045700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132013050624).

80642045700 is an abundant number, since it is smaller than the sum of its proper divisors (183384055548).

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

80642045700 is a wasteful number, since it uses less digits than its factorization.

80642045700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003 (or 3993 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 80642045700 in words is "eighty billion, six hundred forty-two million, forty-five thousand, seven hundred".