763683785616121 has 2 divisors, whose sum is σ = 763683785616122. Its totient is φ = 763683785616120.

The previous prime is 763683785616107. The next prime is 763683785616161. The reversal of 763683785616121 is 121616587386367.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446504961080896 + 317178824535225 = 21130664^2 + 17809515^2 .

It is a cyclic number.

It is not a de Polignac number, because 763683785616121 - 2²⁵ = 763683752061689 is a prime.

It is not a weakly prime, because it can be changed into another prime (763683785616161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381841892808060 + 381841892808061.

It is an arithmetic number, because the mean of its divisors is an integer number (381841892808061).

Almost surely, 2^{763683785616121} is an apocalyptic number.

It is an amenable number.

763683785616121 is a deficient number, since it is larger than the sum of its proper divisors (1).

763683785616121 is an equidigital number, since it uses as much as digits as its factorization.

763683785616121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 365783040, while the sum is 70.

The spelling of 763683785616121 in words is "seven hundred sixty-three trillion, six hundred eighty-three billion, seven hundred eighty-five million, six hundred sixteen thousand, one hundred twenty-one".