672449781108 has 48 divisors (see below), whose sum is σ = 1797716380544. Its totient is φ = 191644548480.

The previous prime is 672449781089. The next prime is 672449781119. The reversal of 672449781108 is 801187944276.

It is a super-2 number, since 2×672449781108² (a number of 24 digits) contains 22 as substring.

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, 10048963 + ... + 10115658.

Almost surely, 2^672449781108 is an apocalyptic number.

It is an amenable number.

672449781108 is an abundant number, since it is smaller than the sum of its proper divisors (1125266599436).

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

672449781108 is a wasteful number, since it uses less digits than its factorization.

672449781108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20165032 (or 20165030 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 57.

The spelling of 672449781108 in words is "six hundred seventy-two billion, four hundred forty-nine million, seven hundred eighty-one thousand, one hundred eight".