672835386388 has 36 divisors (see below), whose sum is σ = 1296001361620. Its totient is φ = 305416869120.

The previous prime is 672835386371. The next prime is 672835386407. The reversal of 672835386388 is 883683538276.

It can be written as a sum of positive squares in 2 ways, for example, as 667583775364 + 5251611024 = 817058^2 + 72468^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 593493 + ... + 1303036.

Almost surely, 2^672835386388 is an apocalyptic number.

It is an amenable number.

672835386388 is a deficient number, since it is larger than the sum of its proper divisors (623165975232).

672835386388 is a wasteful number, since it uses less digits than its factorization.

672835386388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897288 (or 1897275 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 67.

The spelling of 672835386388 in words is "six hundred seventy-two billion, eight hundred thirty-five million, three hundred eighty-six thousand, three hundred eighty-eight".