815951230027 has 2 divisors, whose sum is σ = 815951230028. Its totient is φ = 815951230026.

The previous prime is 815951229971. The next prime is 815951230067. The reversal of 815951230027 is 720032159518.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 815951230027 - 2²³ = 815942841419 is a prime.

It is not a weakly prime, because it can be changed into another prime (815951230067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407975615013 + 407975615014.

It is an arithmetic number, because the mean of its divisors is an integer number (407975615014).

Almost surely, 2^815951230027 is an apocalyptic number.

815951230027 is a deficient number, since it is larger than the sum of its proper divisors (1).

815951230027 is an equidigital number, since it uses as much as digits as its factorization.

815951230027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 815951230027 in words is "eight hundred fifteen billion, nine hundred fifty-one million, two hundred thirty thousand, twenty-seven".