199855907064 has 128 divisors (see below), whose sum is σ = 625160448000. Its totient is φ = 58608748800.

The previous prime is 199855907039. The next prime is 199855907089. The reversal of 199855907064 is 460709558991.

199855907064 is a `hidden beast` number, since 1 + 9 + 9 + 8 + 559 + 0 + 70 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (199855907039) and next prime (199855907089).

It is a junction number, because it is equal to n+sod(n) for n = 199855906992 and 199855907010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1283029 + ... + 1430340.

It is an arithmetic number, because the mean of its divisors is an integer number (4884066000).

Almost surely, 2^199855907064 is an apocalyptic number.

It is an amenable number.

199855907064 is an abundant number, since it is smaller than the sum of its proper divisors (425304540936).

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

199855907064 is a wasteful number, since it uses less digits than its factorization.

199855907064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713426 (or 2713416 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 63.

The spelling of 199855907064 in words is "one hundred ninety-nine billion, eight hundred fifty-five million, nine hundred seven thousand, sixty-four".