196764420139 has 6 divisors (see below), whose sum is σ = 228889223484. Its totient is φ = 168655217220.

The previous prime is 196764420133. The next prime is 196764420173. The reversal of 196764420139 is 931024467691.

It is not a de Polignac number, because 196764420139 - 2⁷ = 196764420011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196764420133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2007800157 + ... + 2007800254.

It is an arithmetic number, because the mean of its divisors is an integer number (38148203914).

Almost surely, 2^196764420139 is an apocalyptic number.

196764420139 is a deficient number, since it is larger than the sum of its proper divisors (32124803345).

196764420139 is an equidigital number, since it uses as much as digits as its factorization.

196764420139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015600425 (or 4015600418 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 196764420139 in words is "one hundred ninety-six billion, seven hundred sixty-four million, four hundred twenty thousand, one hundred thirty-nine".