673256386580 has 48 divisors (see below), whose sum is σ = 1421498287440. Its totient is φ = 267844190208.

The previous prime is 673256386553. The next prime is 673256386613. The reversal of 673256386580 is 85683652376.

It can be written as a sum of positive squares in 8 ways, for example, as 230398080004 + 442858306576 = 479998^2 + 665476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18575516 + ... + 18611724.

It is an arithmetic number, because the mean of its divisors is an integer number (29614547655).

Almost surely, 2^673256386580 is an apocalyptic number.

It is an amenable number.

673256386580 is an abundant number, since it is smaller than the sum of its proper divisors (748241900860).

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

673256386580 is a wasteful number, since it uses less digits than its factorization.

673256386580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41228 (or 41226 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 59.

The spelling of 673256386580 in words is "six hundred seventy-three billion, two hundred fifty-six million, three hundred eighty-six thousand, five hundred eighty".