190779029987 has 16 divisors (see below), whose sum is σ = 237129772992. Its totient is φ = 149451523200.

The previous prime is 190779029971. The next prime is 190779030019. The reversal of 190779029987 is 789920977091.

It is not a de Polignac number, because 190779029987 - 2⁴ = 190779029971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190779029957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10369388 + ... + 10387769.

It is an arithmetic number, because the mean of its divisors is an integer number (14820610812).

Almost surely, 2^190779029987 is an apocalyptic number.

190779029987 is a deficient number, since it is larger than the sum of its proper divisors (46350743005).

190779029987 is a wasteful number, since it uses less digits than its factorization.

190779029987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20757278.

The product of its (nonzero) digits is 36006768, while the sum is 68.

The spelling of 190779029987 in words is "one hundred ninety billion, seven hundred seventy-nine million, twenty-nine thousand, nine hundred eighty-seven".