862783778402 has 24 divisors (see below), whose sum is σ = 1601583417216. Its totient is φ = 341321054256.

The previous prime is 862783778401. The next prime is 862783778453. The reversal of 862783778402 is 204877387268.

It is not an unprimeable number, because it can be changed into a prime (862783778401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182327258 + ... + 182331989.

It is an arithmetic number, because the mean of its divisors is an integer number (66732642384).

Almost surely, 2^862783778402 is an apocalyptic number.

862783778402 is a deficient number, since it is larger than the sum of its proper divisors (738799638814).

862783778402 is a wasteful number, since it uses less digits than its factorization.

862783778402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364659282 (or 364659269 counting only the distinct ones).

The product of its (nonzero) digits is 50577408, while the sum is 62.

The spelling of 862783778402 in words is "eight hundred sixty-two billion, seven hundred eighty-three million, seven hundred seventy-eight thousand, four hundred two".