672781107213113 has 2 divisors, whose sum is σ = 672781107213114. Its totient is φ = 672781107213112.

The previous prime is 672781107212987. The next prime is 672781107213143. The reversal of 672781107213113 is 311312701187276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556554531422464 + 116226575790649 = 23591408^2 + 10780843^2 .

It is a cyclic number.

It is not a de Polignac number, because 672781107213113 - 2¹⁴ = 672781107196729 is a prime.

It is not a weakly prime, because it can be changed into another prime (672781107213143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336390553606556 + 336390553606557.

It is an arithmetic number, because the mean of its divisors is an integer number (336390553606557).

Almost surely, 2^{672781107213113} is an apocalyptic number.

It is an amenable number.

672781107213113 is a deficient number, since it is larger than the sum of its proper divisors (1).

672781107213113 is an equidigital number, since it uses as much as digits as its factorization.

672781107213113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 592704, while the sum is 50.

The spelling of 672781107213113 in words is "six hundred seventy-two trillion, seven hundred eighty-one billion, one hundred seven million, two hundred thirteen thousand, one hundred thirteen".