672549291567 has 16 divisors (see below), whose sum is σ = 996422033760. Its totient is φ = 448342473600.

The previous prime is 672549291563. The next prime is 672549291571. The reversal of 672549291567 is 765192945276.

672549291567 is a `hidden beast` number, since 6 + 7 + 2 + 5 + 49 + 29 + 1 + 567 = 666.

It is an interprime number because it is at equal distance from previous prime (672549291563) and next prime (672549291571).

It is not a de Polignac number, because 672549291567 - 2² = 672549291563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672549291563) 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, 131434 + ... + 1167207.

It is an arithmetic number, because the mean of its divisors is an integer number (62276377110).

Almost surely, 2^672549291567 is an apocalyptic number.

672549291567 is a deficient number, since it is larger than the sum of its proper divisors (323872742193).

672549291567 is a wasteful number, since it uses less digits than its factorization.

672549291567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317831 (or 1317825 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 63.

The spelling of 672549291567 in words is "six hundred seventy-two billion, five hundred forty-nine million, two hundred ninety-one thousand, five hundred sixty-seven".