811371688402 has 16 divisors (see below), whose sum is σ = 1332747421632. Its totient is φ = 367403008720.

The previous prime is 811371688381. The next prime is 811371688417. The reversal of 811371688402 is 204886173118.

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, 70109293 + ... + 70120864.

It is an arithmetic number, because the mean of its divisors is an integer number (83296713852).

Almost surely, 2^811371688402 is an apocalyptic number.

811371688402 is a deficient number, since it is larger than the sum of its proper divisors (521375733230).

811371688402 is a wasteful number, since it uses less digits than its factorization.

811371688402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140230433.

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 811371688402 in words is "eight hundred eleven billion, three hundred seventy-one million, six hundred eighty-eight thousand, four hundred two".