20115097319 has 2 divisors, whose sum is σ = 20115097320. Its totient is φ = 20115097318.

The previous prime is 20115097231. The next prime is 20115097333. The reversal of 20115097319 is 91379051102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20115097319 is a prime.

It is a super-2 number, since 2×20115097319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20115097339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10057548659 + 10057548660.

It is an arithmetic number, because the mean of its divisors is an integer number (10057548660).

Almost surely, 2^20115097319 is an apocalyptic number.

20115097319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20115097319 is an equidigital number, since it uses as much as digits as its factorization.

20115097319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 38.

The spelling of 20115097319 in words is "twenty billion, one hundred fifteen million, ninety-seven thousand, three hundred nineteen".