161606105551480 has 32 divisors (see below), whose sum is σ = 375343212896640. Its totient is φ = 62557202148480.

The previous prime is 161606105551453. The next prime is 161606105551523. The reversal of 161606105551480 is 84155501606161.

It is a super-2 number, since 2×161606105551480² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65163750999 + ... + 65163753478.

It is an arithmetic number, because the mean of its divisors is an integer number (11729475403020).

Almost surely, 2^{161606105551480} is an apocalyptic number.

161606105551480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161606105551480 is an abundant number, since it is smaller than the sum of its proper divisors (213737107345160).

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

161606105551480 is a wasteful number, since it uses less digits than its factorization.

161606105551480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130327504519 (or 130327504515 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 161606105551480 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred five million, five hundred fifty-one thousand, four hundred eighty".