308700080640 has 640 divisors, whose sum is σ = 1268438814720. Its totient is φ = 69700829184.

The previous prime is 308700080639. The next prime is 308700080669. The reversal of 308700080640 is 46080007803.

308700080640 is a `hidden beast` number, since 3 + 0 + 8 + 7 + 0 + 0 + 0 + 8 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

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

It is a junction number, because it is equal to n+sod(n) for n = 308700080595 and 308700080604.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40154877 + ... + 40162563.

It is an arithmetic number, because the mean of its divisors is an integer number (1981935648).

Almost surely, 2^308700080640 is an apocalyptic number.

308700080640 is a gapful number since it is divisible by the number (30) 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 308700080640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634219407360).

308700080640 is an abundant number, since it is smaller than the sum of its proper divisors (959738734080).

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

308700080640 is an equidigital number, since it uses as much as digits as its factorization.

308700080640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7809 (or 7787 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 308700080640 in words is "three hundred eight billion, seven hundred million, eighty thousand, six hundred forty".