199739190435 has 32 divisors (see below), whose sum is σ = 320193699840. Its totient is φ = 106324099200.

The previous prime is 199739190407. The next prime is 199739190491. The reversal of 199739190435 is 534091937991.

It is not a de Polignac number, because 199739190435 - 2⁸ = 199739190179 is a prime.

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, 20395390 + ... + 20405180.

It is an arithmetic number, because the mean of its divisors is an integer number (10006053120).

Almost surely, 2^199739190435 is an apocalyptic number.

199739190435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

199739190435 is a deficient number, since it is larger than the sum of its proper divisors (120454509405).

199739190435 is a wasteful number, since it uses less digits than its factorization.

199739190435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12259.

The product of its (nonzero) digits is 8266860, while the sum is 60.

The spelling of 199739190435 in words is "one hundred ninety-nine billion, seven hundred thirty-nine million, one hundred ninety thousand, four hundred thirty-five".