80785384636 has 24 divisors (see below), whose sum is σ = 154324203264. Its totient is φ = 36697400880.

The previous prime is 80785384579. The next prime is 80785384643. The reversal of 80785384636 is 63648358708.

It is a congruent number.

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, 510270 + ... + 649573.

It is an arithmetic number, because the mean of its divisors is an integer number (6430175136).

Almost surely, 2^80785384636 is an apocalyptic number.

It is an amenable number.

80785384636 is a deficient number, since it is larger than the sum of its proper divisors (73538818628).

80785384636 is a wasteful number, since it uses less digits than its factorization.

80785384636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161441 (or 1161439 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 58.

The spelling of 80785384636 in words is "eighty billion, seven hundred eighty-five million, three hundred eighty-four thousand, six hundred thirty-six".