815135576051 has 2 divisors, whose sum is σ = 815135576052. Its totient is φ = 815135576050.

The previous prime is 815135575981. The next prime is 815135576053. The reversal of 815135576051 is 150675531518.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 815135576051 - 2¹⁰ = 815135575027 is a prime.

Together with 815135576053, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 815135575987 and 815135576005.

It is not a weakly prime, because it can be changed into another prime (815135576053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407567788025 + 407567788026.

It is an arithmetic number, because the mean of its divisors is an integer number (407567788026).

Almost surely, 2^815135576051 is an apocalyptic number.

815135576051 is a deficient number, since it is larger than the sum of its proper divisors (1).

815135576051 is an equidigital number, since it uses as much as digits as its factorization.

815135576051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630000, while the sum is 47.

The spelling of 815135576051 in words is "eight hundred fifteen billion, one hundred thirty-five million, five hundred seventy-six thousand, fifty-one".