672812135757 has 16 divisors (see below), whose sum is σ = 1001977359360. Its totient is φ = 446193036000.

The previous prime is 672812135617. The next prime is 672812135777. The reversal of 672812135757 is 757531218276.

672812135757 is a `hidden beast` number, since 6 + 7 + 281 + 2 + 1 + 357 + 5 + 7 = 666.

It is not a de Polignac number, because 672812135757 - 2¹² = 672812131661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672812135777) 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, 65227744 + ... + 65238057.

It is an arithmetic number, because the mean of its divisors is an integer number (62623584960).

Almost surely, 2^672812135757 is an apocalyptic number.

It is an amenable number.

672812135757 is a deficient number, since it is larger than the sum of its proper divisors (329165223603).

672812135757 is a wasteful number, since it uses less digits than its factorization.

672812135757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130466001 (or 130465995 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 54.

The spelling of 672812135757 in words is "six hundred seventy-two billion, eight hundred twelve million, one hundred thirty-five thousand, seven hundred fifty-seven".