161752503213 has 48 divisors (see below), whose sum is σ = 278699765760. Its totient is φ = 88389034272.

The previous prime is 161752503191. The next prime is 161752503221. The reversal of 161752503213 is 312305257161.

161752503213 is a `hidden beast` number, since 1 + 61 + 75 + 2 + 503 + 21 + 3 = 666.

It is not a de Polignac number, because 161752503213 - 2²⁴ = 161735725997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161752503013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6918898 + ... + 6942236.

It is an arithmetic number, because the mean of its divisors is an integer number (5806245120).

Almost surely, 2^161752503213 is an apocalyptic number.

It is an amenable number.

161752503213 is a deficient number, since it is larger than the sum of its proper divisors (116947262547).

161752503213 is a wasteful number, since it uses less digits than its factorization.

161752503213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28158 (or 28155 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 161752503213 in words is "one hundred sixty-one billion, seven hundred fifty-two million, five hundred three thousand, two hundred thirteen".