80653813644 has 48 divisors (see below), whose sum is σ = 194711982080. Its totient is φ = 25957221120.

The previous prime is 80653813631. The next prime is 80653813649. The reversal of 80653813644 is 44631835608.

It is a junction number, because it is equal to n+sod(n) for n = 80653813593 and 80653813602.

It is not an unprimeable number, because it can be changed into a prime (80653813649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89284 + ... + 411435.

Almost surely, 2^80653813644 is an apocalyptic number.

It is an amenable number.

80653813644 is an abundant number, since it is smaller than the sum of its proper divisors (114058168436).

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

80653813644 is a wasteful number, since it uses less digits than its factorization.

80653813644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501190 (or 501188 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 80653813644 in words is "eighty billion, six hundred fifty-three million, eight hundred thirteen thousand, six hundred forty-four".