161534063612642 has 64 divisors (see below), whose sum is σ = 295737164881920. Its totient is φ = 64631201007744.

The previous prime is 161534063612627. The next prime is 161534063612683. The reversal of 161534063612642 is 246216360435161.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19006703 + ... + 26159565.

It is an arithmetic number, because the mean of its divisors is an integer number (4620893201280).

Almost surely, 2^{161534063612642} is an apocalyptic number.

161534063612642 is a deficient number, since it is larger than the sum of its proper divisors (134203101269278).

161534063612642 is a wasteful number, since it uses less digits than its factorization.

161534063612642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154127.

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 161534063612642 in words is "one hundred sixty-one trillion, five hundred thirty-four billion, sixty-three million, six hundred twelve thousand, six hundred forty-two".