161535413447 has 2 divisors, whose sum is σ = 161535413448. Its totient is φ = 161535413446.

The previous prime is 161535413437. The next prime is 161535413509. The reversal of 161535413447 is 744314535161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161535413447 - 2⁸ = 161535413191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161535413398 and 161535413407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161535413437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80767706723 + 80767706724.

It is an arithmetic number, because the mean of its divisors is an integer number (80767706724).

Almost surely, 2^161535413447 is an apocalyptic number.

161535413447 is a deficient number, since it is larger than the sum of its proper divisors (1).

161535413447 is an equidigital number, since it uses as much as digits as its factorization.

161535413447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 44.

The spelling of 161535413447 in words is "one hundred sixty-one billion, five hundred thirty-five million, four hundred thirteen thousand, four hundred forty-seven".