373106109991 has 2 divisors, whose sum is σ = 373106109992. Its totient is φ = 373106109990.

The previous prime is 373106109989. The next prime is 373106110043. The reversal of 373106109991 is 199901601373.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 373106109991 - 2¹ = 373106109989 is a prime.

Together with 373106109989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (373106109931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186553054995 + 186553054996.

It is an arithmetic number, because the mean of its divisors is an integer number (186553054996).

Almost surely, 2^373106109991 is an apocalyptic number.

373106109991 is a deficient number, since it is larger than the sum of its proper divisors (1).

373106109991 is an equidigital number, since it uses as much as digits as its factorization.

373106109991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 275562, while the sum is 49.

The spelling of 373106109991 in words is "three hundred seventy-three billion, one hundred six million, one hundred nine thousand, nine hundred ninety-one".