161206513472 has 28 divisors (see below), whose sum is σ = 330213346176. Its totient is φ = 78003150720.

The previous prime is 161206513471. The next prime is 161206513483. The reversal of 161206513472 is 274315602161.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161206513471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40624658 + ... + 40628625.

It is an arithmetic number, because the mean of its divisors is an integer number (11793333792).

Almost surely, 2^161206513472 is an apocalyptic number.

It is an amenable number.

161206513472 is an abundant number, since it is smaller than the sum of its proper divisors (169006832704).

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

161206513472 is an equidigital number, since it uses as much as digits as its factorization.

161206513472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81253326 (or 81253316 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 161206513472 in words is "one hundred sixty-one billion, two hundred six million, five hundred thirteen thousand, four hundred seventy-two".