672700133012721 has 16 divisors (see below), whose sum is σ = 978474656881920. Its totient is φ = 407696326920720.

The previous prime is 672700133012681. The next prime is 672700133012749. The reversal of 672700133012721 is 127210331007276.

It is not a de Polignac number, because 672700133012721 - 2¹⁸ = 672700132750577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672770133012721) 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, 1099326 + ... + 36696168.

It is an arithmetic number, because the mean of its divisors is an integer number (61154666055120).

Almost surely, 2^{672700133012721} is an apocalyptic number.

It is an amenable number.

672700133012721 is a deficient number, since it is larger than the sum of its proper divisors (305774523869199).

672700133012721 is a wasteful number, since it uses less digits than its factorization.

672700133012721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36169516.

The product of its (nonzero) digits is 148176, while the sum is 42.

Adding to 672700133012721 its reverse (127210331007276), we get a palindrome (799910464019997).

The spelling of 672700133012721 in words is "six hundred seventy-two trillion, seven hundred billion, one hundred thirty-three million, twelve thousand, seven hundred twenty-one".