199942702377 has 32 divisors (see below), whose sum is σ = 298860641664. Its totient is φ = 117833356800.

The previous prime is 199942702373. The next prime is 199942702391. The reversal of 199942702377 is 773207249991.

It is not a de Polignac number, because 199942702377 - 2² = 199942702373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199942702377.

It is not an unprimeable number, because it can be changed into a prime (199942702373) by changing a digit.

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, 2078733 + ... + 2172789.

It is an arithmetic number, because the mean of its divisors is an integer number (9339395052).

Almost surely, 2^199942702377 is an apocalyptic number.

It is an amenable number.

199942702377 is a deficient number, since it is larger than the sum of its proper divisors (98917939287).

199942702377 is a wasteful number, since it uses less digits than its factorization.

199942702377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95849.

The product of its (nonzero) digits is 12002256, while the sum is 60.

The spelling of 199942702377 in words is "one hundred ninety-nine billion, nine hundred forty-two million, seven hundred two thousand, three hundred seventy-seven".