161015506510147 has 2 divisors, whose sum is σ = 161015506510148. Its totient is φ = 161015506510146.

The previous prime is 161015506510091. The next prime is 161015506510207. The reversal of 161015506510147 is 741015605510161.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161015506510147 is a prime.

It is not a weakly prime, because it can be changed into another prime (161015506550147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80507753255073 + 80507753255074.

It is an arithmetic number, because the mean of its divisors is an integer number (80507753255074).

Almost surely, 2^{161015506510147} is an apocalyptic number.

161015506510147 is a deficient number, since it is larger than the sum of its proper divisors (1).

161015506510147 is an equidigital number, since it uses as much as digits as its factorization.

161015506510147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 43.

The spelling of 161015506510147 in words is "one hundred sixty-one trillion, fifteen billion, five hundred six million, five hundred ten thousand, one hundred forty-seven".