672740861101 has 2 divisors, whose sum is σ = 672740861102. Its totient is φ = 672740861100.

The previous prime is 672740861077. The next prime is 672740861159. The reversal of 672740861101 is 101168047276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336485845476 + 336255015625 = 580074^2 + 579875^2 .

It is a cyclic number.

It is not a de Polignac number, because 672740861101 - 2¹⁷ = 672740730029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672740867101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336370430550 + 336370430551.

It is an arithmetic number, because the mean of its divisors is an integer number (336370430551).

Almost surely, 2^672740861101 is an apocalyptic number.

It is an amenable number.

672740861101 is a deficient number, since it is larger than the sum of its proper divisors (1).

672740861101 is an equidigital number, since it uses as much as digits as its factorization.

672740861101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 672740861101 in words is "six hundred seventy-two billion, seven hundred forty million, eight hundred sixty-one thousand, one hundred one".