195666082920 has 256 divisors, whose sum is σ = 813158092800. Its totient is φ = 40657870080.

The previous prime is 195666082867. The next prime is 195666082943. The reversal of 195666082920 is 29280666591.

It is a happy number.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 1093284 + ... + 1259603.

It is an arithmetic number, because the mean of its divisors is an integer number (3176398800).

Almost surely, 2^195666082920 is an apocalyptic number.

195666082920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195666082920 is an abundant number, since it is smaller than the sum of its proper divisors (617492009880).

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

195666082920 is a wasteful number, since it uses less digits than its factorization.

195666082920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352925 (or 2352915 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 195666082920 in words is "one hundred ninety-five billion, six hundred sixty-six million, eighty-two thousand, nine hundred twenty".