115565620619 has 2 divisors, whose sum is σ = 115565620620. Its totient is φ = 115565620618.

The previous prime is 115565620567. The next prime is 115565620693. The reversal of 115565620619 is 916026565511.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115565620619 is a prime.

It is a super-2 number, since 2×115565620619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (115565620319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57782810309 + 57782810310.

It is an arithmetic number, because the mean of its divisors is an integer number (57782810310).

Almost surely, 2^115565620619 is an apocalyptic number.

115565620619 is a deficient number, since it is larger than the sum of its proper divisors (1).

115565620619 is an equidigital number, since it uses as much as digits as its factorization.

115565620619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 47.

The spelling of 115565620619 in words is "one hundred fifteen billion, five hundred sixty-five million, six hundred twenty thousand, six hundred nineteen".