198077072640 has 72 divisors (see below), whose sum is σ = 632608663008. Its totient is φ = 52820551680.

The previous prime is 198077072617. The next prime is 198077072701. The reversal of 198077072640 is 46270770891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25787446 + ... + 25795125.

Almost surely, 2^198077072640 is an apocalyptic number.

198077072640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198077072640 is an abundant number, since it is smaller than the sum of its proper divisors (434531590368).

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

198077072640 is an equidigital number, since it uses as much as digits as its factorization.

198077072640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51582595 (or 51582581 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 51.

The spelling of 198077072640 in words is "one hundred ninety-eight billion, seventy-seven million, seventy-two thousand, six hundred forty".