83666434774 has 16 divisors (see below), whose sum is σ = 135346302000. Its totient is φ = 38560183200.

The previous prime is 83666434757. The next prime is 83666434877. The reversal of 83666434774 is 47743466638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2277024 + ... + 2313475.

It is an arithmetic number, because the mean of its divisors is an integer number (8459143875).

Almost surely, 2^83666434774 is an apocalyptic number.

83666434774 is a deficient number, since it is larger than the sum of its proper divisors (51679867226).

83666434774 is a wasteful number, since it uses less digits than its factorization.

83666434774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591215.

The product of its digits is 48771072, while the sum is 58.

The spelling of 83666434774 in words is "eighty-three billion, six hundred sixty-six million, four hundred thirty-four thousand, seven hundred seventy-four".