672228321157 has 16 divisors (see below), whose sum is σ = 712479559680. Its totient is φ = 632056174848.

The previous prime is 672228321131. The next prime is 672228321169. The reversal of 672228321157 is 751123822276.

672228321157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672228321157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672228321857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92755908 + ... + 92763154.

It is an arithmetic number, because the mean of its divisors is an integer number (44529972480).

Almost surely, 2^672228321157 is an apocalyptic number.

It is an amenable number.

672228321157 is a deficient number, since it is larger than the sum of its proper divisors (40251238523).

672228321157 is a wasteful number, since it uses less digits than its factorization.

672228321157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11940.

The product of its digits is 564480, while the sum is 46.

The spelling of 672228321157 in words is "six hundred seventy-two billion, two hundred twenty-eight million, three hundred twenty-one thousand, one hundred fifty-seven".