802686431057 has 4 divisors (see below), whose sum is σ = 917355921216. Its totient is φ = 688016940900.

The previous prime is 802686431023. The next prime is 802686431059. The reversal of 802686431057 is 750134686208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 802686431057 - 2²² = 802682236753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 802686430996 and 802686431014.

It is not an unprimeable number, because it can be changed into a prime (802686431059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57334745069 + ... + 57334745082.

It is an arithmetic number, because the mean of its divisors is an integer number (229338980304).

Almost surely, 2^802686431057 is an apocalyptic number.

It is an amenable number.

802686431057 is a deficient number, since it is larger than the sum of its proper divisors (114669490159).

802686431057 is a wasteful number, since it uses less digits than its factorization.

802686431057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114669490158.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 802686431057 in words is "eight hundred two billion, six hundred eighty-six million, four hundred thirty-one thousand, fifty-seven".