672187205720 has 16 divisors (see below), whose sum is σ = 1512421212960. Its totient is φ = 268874882272.

The previous prime is 672187205707. The next prime is 672187205813. The reversal of 672187205720 is 27502781276.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8402340032 + ... + 8402340111.

It is an arithmetic number, because the mean of its divisors is an integer number (94526325810).

Almost surely, 2^672187205720 is an apocalyptic number.

It is an amenable number.

672187205720 is an abundant number, since it is smaller than the sum of its proper divisors (840234007240).

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

672187205720 is a wasteful number, since it uses less digits than its factorization.

672187205720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16804680154 (or 16804680150 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 47.

Adding to 672187205720 its reverse (27502781276), we get a palindrome (699689986996).

The spelling of 672187205720 in words is "six hundred seventy-two billion, one hundred eighty-seven million, two hundred five thousand, seven hundred twenty".