195021338880 has 72 divisors (see below), whose sum is σ = 622849413312. Its totient is φ = 52005689344.

The previous prime is 195021338851. The next prime is 195021338903. The reversal of 195021338880 is 88833120591.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25389564 + ... + 25397243.

It is an arithmetic number, because the mean of its divisors is an integer number (8650686296).

Almost surely, 2^195021338880 is an apocalyptic number.

195021338880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195021338880 is an abundant number, since it is smaller than the sum of its proper divisors (427828074432).

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

195021338880 is an equidigital number, since it uses as much as digits as its factorization.

195021338880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50786831 (or 50786817 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 195021338880 in words is "one hundred ninety-five billion, twenty-one million, three hundred thirty-eight thousand, eight hundred eighty".