672540161775 has 24 divisors (see below), whose sum is σ = 1120688461824. Its totient is φ = 355863765600.

The previous prime is 672540161767. The next prime is 672540161807. The reversal of 672540161775 is 577161045276.

It is a happy number.

It is not a de Polignac number, because 672540161775 - 2³ = 672540161767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35294421 + ... + 35313470.

It is an arithmetic number, because the mean of its divisors is an integer number (46695352576).

Almost surely, 2^672540161775 is an apocalyptic number.

672540161775 is a deficient number, since it is larger than the sum of its proper divisors (448148300049).

672540161775 is a wasteful number, since it uses less digits than its factorization.

672540161775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70608031 (or 70608026 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 51.

The spelling of 672540161775 in words is "six hundred seventy-two billion, five hundred forty million, one hundred sixty-one thousand, seven hundred seventy-five".