673720455936 has 72 divisors (see below), whose sum is σ = 1956086121024. Its totient is φ = 204157711360.

The previous prime is 673720455917. The next prime is 673720456021. The reversal of 673720455936 is 639554027376.

It is a super-2 number, since 2×673720455936² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 39866106 + ... + 39883001.

It is an arithmetic number, because the mean of its divisors is an integer number (27167862792).

Almost surely, 2^673720455936 is an apocalyptic number.

673720455936 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

673720455936 is an abundant number, since it is smaller than the sum of its proper divisors (1282365665088).

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

673720455936 is a wasteful number, since it uses less digits than its factorization.

673720455936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79749137 (or 79749123 counting only the distinct ones).

The product of its (nonzero) digits is 28576800, while the sum is 57.

The spelling of 673720455936 in words is "six hundred seventy-three billion, seven hundred twenty million, four hundred fifty-five thousand, nine hundred thirty-six".