815478016159 has 2 divisors, whose sum is σ = 815478016160. Its totient is φ = 815478016158.

The previous prime is 815478016121. The next prime is 815478016211. The reversal of 815478016159 is 951610874518.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 815478016159 - 2²¹ = 815475919007 is a prime.

It is a super-2 number, since 2×815478016159² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (815478016109) 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, 407739008079 + 407739008080.

It is an arithmetic number, because the mean of its divisors is an integer number (407739008080).

Almost surely, 2^815478016159 is an apocalyptic number.

815478016159 is a deficient number, since it is larger than the sum of its proper divisors (1).

815478016159 is an equidigital number, since it uses as much as digits as its factorization.

815478016159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 55.

The spelling of 815478016159 in words is "eight hundred fifteen billion, four hundred seventy-eight million, sixteen thousand, one hundred fifty-nine".