672435643465729 has 32 divisors (see below), whose sum is σ = 833239451520000. Its totient is φ = 533511315236160.

The previous prime is 672435643465723. The next prime is 672435643465871. The reversal of 672435643465729 is 927564346534276.

It is a cyclic number.

It is not a de Polignac number, because 672435643465729 - 2³ = 672435643465721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672435643465721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246632149 + ... + 249343714.

It is an arithmetic number, because the mean of its divisors is an integer number (26038732860000).

Almost surely, 2^{672435643465729} is an apocalyptic number.

It is an amenable number.

672435643465729 is a deficient number, since it is larger than the sum of its proper divisors (160803808054271).

672435643465729 is a wasteful number, since it uses less digits than its factorization.

672435643465729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495976405.

The product of its digits is 5486745600, while the sum is 73.

The spelling of 672435643465729 in words is "six hundred seventy-two trillion, four hundred thirty-five billion, six hundred forty-three million, four hundred sixty-five thousand, seven hundred twenty-nine".