199960549020 has 96 divisors (see below), whose sum is σ = 623979498240. Its totient is φ = 53161669440.

The previous prime is 199960548967. The next prime is 199960549043. The reversal of 199960549020 is 20945069991.

199960549020 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 605 + 4 + 9 + 0 + 20 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380622 + ... + 738101.

It is an arithmetic number, because the mean of its divisors is an integer number (6499786440).

Almost surely, 2^199960549020 is an apocalyptic number.

199960549020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199960549020 is an abundant number, since it is smaller than the sum of its proper divisors (424018949220).

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

199960549020 is a wasteful number, since it uses less digits than its factorization.

199960549020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119072 (or 1119064 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 54.

The spelling of 199960549020 in words is "one hundred ninety-nine billion, nine hundred sixty million, five hundred forty-nine thousand, twenty".