161279118407 has 16 divisors (see below), whose sum is σ = 187965110400. Its totient is φ = 136827519840.

The previous prime is 161279118401. The next prime is 161279118431. The reversal of 161279118407 is 704811972161.

It is not a de Polignac number, because 161279118407 - 2¹⁰ = 161279117383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161279118401) 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, 5744732 + ... + 5772737.

It is an arithmetic number, because the mean of its divisors is an integer number (11747819400).

Almost surely, 2^161279118407 is an apocalyptic number.

161279118407 is a deficient number, since it is larger than the sum of its proper divisors (26685991993).

161279118407 is a wasteful number, since it uses less digits than its factorization.

161279118407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11517566.

The product of its (nonzero) digits is 169344, while the sum is 47.

The spelling of 161279118407 in words is "one hundred sixty-one billion, two hundred seventy-nine million, one hundred eighteen thousand, four hundred seven".