672399034320 has 320 divisors, whose sum is σ = 2272482051840. Its totient is φ = 163480633344.

The previous prime is 672399034297. The next prime is 672399034331. The reversal of 672399034320 is 23430993276.

It is a super-2 number, since 2×672399034320² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 672399034320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114604027 + ... + 114609893.

It is an arithmetic number, because the mean of its divisors is an integer number (7101506412).

Almost surely, 2^672399034320 is an apocalyptic number.

672399034320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672399034320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1136241025920).

672399034320 is an abundant number, since it is smaller than the sum of its proper divisors (1600083017520).

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

672399034320 is a wasteful number, since it uses less digits than its factorization.

672399034320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6342 (or 6336 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 48.

The spelling of 672399034320 in words is "six hundred seventy-two billion, three hundred ninety-nine million, thirty-four thousand, three hundred twenty".