161413525020 has 96 divisors (see below), whose sum is σ = 494466529536. Its totient is φ = 39017728000.

The previous prime is 161413524997. The next prime is 161413525033. The reversal of 161413525020 is 20525314161.

161413525020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123381 + ... + 581420.

It is an arithmetic number, because the mean of its divisors is an integer number (5150693016).

Almost surely, 2^161413525020 is an apocalyptic number.

161413525020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161413525020 is an abundant number, since it is smaller than the sum of its proper divisors (333053004516).

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

161413525020 is a wasteful number, since it uses less digits than its factorization.

161413525020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705171 (or 705169 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 161413525020 its reverse (20525314161), we get a palindrome (181938839181).

The spelling of 161413525020 in words is "one hundred sixty-one billion, four hundred thirteen million, five hundred twenty-five thousand, twenty".