107838808694921 has 2 divisors, whose sum is σ = 107838808694922. Its totient is φ = 107838808694920.

The previous prime is 107838808694891. The next prime is 107838808694941. The reversal of 107838808694921 is 129496808838701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83790955987600 + 24047852707321 = 9153740^2 + 4903861^2 .

It is a cyclic number.

It is not a de Polignac number, because 107838808694921 - 2⁶ = 107838808694857 is a prime.

It is not a weakly prime, because it can be changed into another prime (107838808694941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53919404347460 + 53919404347461.

It is an arithmetic number, because the mean of its divisors is an integer number (53919404347461).

Almost surely, 2^{107838808694921} is an apocalyptic number.

It is an amenable number.

107838808694921 is a deficient number, since it is larger than the sum of its proper divisors (1).

107838808694921 is an equidigital number, since it uses as much as digits as its factorization.

107838808694921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 334430208, while the sum is 74.

The spelling of 107838808694921 in words is "one hundred seven trillion, eight hundred thirty-eight billion, eight hundred eight million, six hundred ninety-four thousand, nine hundred twenty-one".