190777836668 has 48 divisors (see below), whose sum is σ = 372006096000. Its totient is φ = 85223130048.

The previous prime is 190777836551. The next prime is 190777836671. The reversal of 190777836668 is 866638777091.

It is a junction number, because it is equal to n+sod(n) for n = 190777836598 and 190777836607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 911738 + ... + 1101281.

It is an arithmetic number, because the mean of its divisors is an integer number (7750127000).

Almost surely, 2^190777836668 is an apocalyptic number.

It is an amenable number.

190777836668 is a deficient number, since it is larger than the sum of its proper divisors (181228259332).

190777836668 is a wasteful number, since it uses less digits than its factorization.

190777836668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013114 (or 2013112 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 68.

The spelling of 190777836668 in words is "one hundred ninety billion, seven hundred seventy-seven million, eight hundred thirty-six thousand, six hundred sixty-eight".