161064042774 has 8 divisors (see below), whose sum is σ = 322128085560. Its totient is φ = 53688014256.

The previous prime is 161064042757. The next prime is 161064042781. The reversal of 161064042774 is 477240460161.

It is a sphenic number, since it is the product of 3 distinct primes.

161064042774 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13422003559 + ... + 13422003570.

It is an arithmetic number, because the mean of its divisors is an integer number (40266010695).

Almost surely, 2^161064042774 is an apocalyptic number.

161064042774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161064042774 is a wasteful number, since it uses less digits than its factorization.

161064042774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26844007134.

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 161064042774 in words is "one hundred sixty-one billion, sixty-four million, forty-two thousand, seven hundred seventy-four".