83934474803777 has 32 divisors (see below), whose sum is σ = 101684269965600. Its totient is φ = 68503086747648.

The previous prime is 83934474803723. The next prime is 83934474803791. The reversal of 83934474803777 is 77730847443938.

It is a Cunningham number, because it is equal to 9161576²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 14298804453376 + 69635670350401 = 3781376^2 + 8344799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83934474803777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83934474823777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176740502 + ... + 177214767.

It is an arithmetic number, because the mean of its divisors is an integer number (3177633436425).

Almost surely, 2^{83934474803777} is an apocalyptic number.

It is an amenable number.

83934474803777 is a deficient number, since it is larger than the sum of its proper divisors (17749795161823).

83934474803777 is a wasteful number, since it uses less digits than its factorization.

83934474803777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353955365.

The product of its (nonzero) digits is 2389782528, while the sum is 74.

The spelling of 83934474803777 in words is "eighty-three trillion, nine hundred thirty-four billion, four hundred seventy-four million, eight hundred three thousand, seven hundred seventy-seven".