80780933664 has 48 divisors (see below), whose sum is σ = 235611059040. Its totient is φ = 26926977600.

The previous prime is 80780933621. The next prime is 80780933677. The reversal of 80780933664 is 46633908708.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 80780933664.

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, 46747362 + ... + 46749089.

It is an arithmetic number, because the mean of its divisors is an integer number (4908563730).

Almost surely, 2^80780933664 is an apocalyptic number.

It is an amenable number.

80780933664 is an abundant number, since it is smaller than the sum of its proper divisors (154830125376).

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

80780933664 is a wasteful number, since it uses less digits than its factorization.

80780933664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93496470 (or 93496456 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 80780933664 in words is "eighty billion, seven hundred eighty million, nine hundred thirty-three thousand, six hundred sixty-four".