616722783894 has 24 divisors (see below), whose sum is σ = 1527123084240. Its totient is φ = 176206509648.

The previous prime is 616722783869. The next prime is 616722783977. The reversal of 616722783894 is 498387227616.

616722783894 is a `hidden beast` number, since 6 + 167 + 22 + 78 + 389 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2447312509 + ... + 2447312760.

It is an arithmetic number, because the mean of its divisors is an integer number (63630128510).

Almost surely, 2^616722783894 is an apocalyptic number.

616722783894 is an abundant number, since it is smaller than the sum of its proper divisors (910400300346).

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

616722783894 is a wasteful number, since it uses less digits than its factorization.

616722783894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894625284 (or 4894625281 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 616722783894 in words is "six hundred sixteen billion, seven hundred twenty-two million, seven hundred eighty-three thousand, eight hundred ninety-four".