161408810615 has 16 divisors (see below), whose sum is σ = 209208836928. Its totient is φ = 118840490496.

The previous prime is 161408810609. The next prime is 161408810617. The reversal of 161408810615 is 516018804161.

It is not a de Polignac number, because 161408810615 - 2⁸ = 161408810359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161408810617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3662387 + ... + 3706196.

It is an arithmetic number, because the mean of its divisors is an integer number (13075552308).

Almost surely, 2^161408810615 is an apocalyptic number.

161408810615 is a deficient number, since it is larger than the sum of its proper divisors (47800026313).

161408810615 is a wasteful number, since it uses less digits than its factorization.

161408810615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7368938.

The product of its (nonzero) digits is 46080, while the sum is 41.

The spelling of 161408810615 in words is "one hundred sixty-one billion, four hundred eight million, eight hundred ten thousand, six hundred fifteen".