195987455980 has 24 divisors (see below), whose sum is σ = 411585134688. Its totient is φ = 78392796288.

The previous prime is 195987455971. The next prime is 195987455999. The reversal of 195987455980 is 89554789591.

It is a super-2 number, since 2×195987455980² (a number of 23 digits) contains 22 as substring.

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, 733737 + ... + 964543.

It is an arithmetic number, because the mean of its divisors is an integer number (17149380612).

Almost surely, 2^195987455980 is an apocalyptic number.

195987455980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195987455980 is an abundant number, since it is smaller than the sum of its proper divisors (215597678708).

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

195987455980 is a wasteful number, since it uses less digits than its factorization.

195987455980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273273 (or 273271 counting only the distinct ones).

The product of its (nonzero) digits is 163296000, while the sum is 70.

The spelling of 195987455980 in words is "one hundred ninety-five billion, nine hundred eighty-seven million, four hundred fifty-five thousand, nine hundred eighty".