161124521652 has 48 divisors (see below), whose sum is σ = 432134740800. Its totient is φ = 51856166880.

The previous prime is 161124521627. The next prime is 161124521659. The reversal of 161124521652 is 256125421161.

161124521652 is a `hidden beast` number, since 1 + 6 + 1 + 124 + 521 + 6 + 5 + 2 = 666.

It is a super-2 number, since 2×161124521652² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161124521659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25719174 + ... + 25725437.

It is an arithmetic number, because the mean of its divisors is an integer number (9002807100).

Almost surely, 2^161124521652 is an apocalyptic number.

161124521652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161124521652 is an abundant number, since it is smaller than the sum of its proper divisors (271010219148).

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

161124521652 is a wasteful number, since it uses less digits than its factorization.

161124521652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51444653 (or 51444645 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The spelling of 161124521652 in words is "one hundred sixty-one billion, one hundred twenty-four million, five hundred twenty-one thousand, six hundred fifty-two".