161223464135044 has 6 divisors (see below), whose sum is σ = 282141062236334. Its totient is φ = 80611732067520.

The previous prime is 161223464134963. The next prime is 161223464135059. The reversal of 161223464135044 is 440531464322161.

It is a happy number.

161223464135044 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 161169677248644 + 53786886400 = 12695262^2 + 231920^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161223464134985 and 161223464135003.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20152933016877 + ... + 20152933016884.

Almost surely, 2^{161223464135044} is an apocalyptic number.

It is an amenable number.

161223464135044 is a deficient number, since it is larger than the sum of its proper divisors (120917598101290).

161223464135044 is a wasteful number, since it uses less digits than its factorization.

161223464135044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40305866033765 (or 40305866033763 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 161223464135044 in words is "one hundred sixty-one trillion, two hundred twenty-three billion, four hundred sixty-four million, one hundred thirty-five thousand, forty-four".