672533727831 has 18 divisors (see below), whose sum is σ = 1130039665872. Its totient is φ = 384304987080.

The previous prime is 672533727763. The next prime is 672533727839. The reversal of 672533727831 is 138727335276.

672533727831 is a `hidden beast` number, since 6 + 7 + 2 + 5 + 337 + 278 + 31 = 666.

It is not a de Polignac number, because 672533727831 - 2¹⁸ = 672533465687 is a prime.

It is a super-2 number, since 2×672533727831² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672533727839) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 762509455 + ... + 762510336.

Almost surely, 2^672533727831 is an apocalyptic number.

672533727831 is a deficient number, since it is larger than the sum of its proper divisors (457505938041).

672533727831 is a wasteful number, since it uses less digits than its factorization.

672533727831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525019811 (or 1525019801 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 54.

The spelling of 672533727831 in words is "six hundred seventy-two billion, five hundred thirty-three million, seven hundred twenty-seven thousand, eight hundred thirty-one".