20870186315899 has 2 divisors, whose sum is σ = 20870186315900. Its totient is φ = 20870186315898.

The previous prime is 20870186315819. The next prime is 20870186315939. The reversal of 20870186315899 is 99851368107802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20870186315899 - 2²¹ = 20870184218747 is a prime.

It is not a weakly prime, because it can be changed into another prime (20870186315819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10435093157949 + 10435093157950.

It is an arithmetic number, because the mean of its divisors is an integer number (10435093157950).

Almost surely, 2^{20870186315899} is an apocalyptic number.

20870186315899 is a deficient number, since it is larger than the sum of its proper divisors (1).

20870186315899 is an equidigital number, since it uses as much as digits as its factorization.

20870186315899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52254720, while the sum is 67.

The spelling of 20870186315899 in words is "twenty trillion, eight hundred seventy billion, one hundred eighty-six million, three hundred fifteen thousand, eight hundred ninety-nine".