161210316250020 has 24 divisors (see below), whose sum is σ = 451388885500224. Its totient is φ = 42989417666656.

The previous prime is 161210316250013. The next prime is 161210316250063. The reversal of 161210316250020 is 20052613012161.

161210316250020 is digitally balanced in base 2, 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 self number, because there is not a number n which added to its sum of digits gives 161210316250020.

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, 1343419302024 + ... + 1343419302143.

It is an arithmetic number, because the mean of its divisors is an integer number (18807870229176).

Almost surely, 2^{161210316250020} is an apocalyptic number.

161210316250020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161210316250020 is an abundant number, since it is smaller than the sum of its proper divisors (290178569250204).

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

161210316250020 is a wasteful number, since it uses less digits than its factorization.

161210316250020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686838604179 (or 2686838604177 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 161210316250020 its reverse (20052613012161), we get a palindrome (181262929262181).

The spelling of 161210316250020 in words is "one hundred sixty-one trillion, two hundred ten billion, three hundred sixteen million, two hundred fifty thousand, twenty".