818077917894 has 32 divisors (see below), whose sum is σ = 1675209972480. Its totient is φ = 266191222752.

The previous prime is 818077917893. The next prime is 818077917901. The reversal of 818077917894 is 498719770818.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818077917893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519322 + ... + 1380525.

It is an arithmetic number, because the mean of its divisors is an integer number (52350311640).

Almost surely, 2^818077917894 is an apocalyptic number.

818077917894 is an abundant number, since it is smaller than the sum of its proper divisors (857132054586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

818077917894 is a wasteful number, since it uses less digits than its factorization.

818077917894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901564.

The product of its (nonzero) digits is 56899584, while the sum is 69.

The spelling of 818077917894 in words is "eight hundred eighteen billion, seventy-seven million, nine hundred seventeen thousand, eight hundred ninety-four".