169681600080 has 60 divisors (see below), whose sum is σ = 569847376020. Its totient is φ = 45248426496.

The previous prime is 169681600063. The next prime is 169681600103. The reversal of 169681600080 is 80006186961.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 124984875024 + 44696725056 = 353532^2 + 211416^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 169681599999 and 169681600035.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117833725 + ... + 117835164.

It is an arithmetic number, because the mean of its divisors is an integer number (9497456267).

Almost surely, 2^169681600080 is an apocalyptic number.

169681600080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

169681600080 is an abundant number, since it is smaller than the sum of its proper divisors (400165775940).

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

169681600080 is a wasteful number, since it uses less digits than its factorization.

169681600080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235668908 (or 235668899 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 169681600080 in words is "one hundred sixty-nine billion, six hundred eighty-one million, six hundred thousand, eighty".