1641880268180 has 24 divisors (see below), whose sum is σ = 3458964386472. Its totient is φ = 654653855232.

The previous prime is 1641880268177. The next prime is 1641880268209. The reversal of 1641880268180 is 818620881461.

It can be written as a sum of positive squares in 4 ways, for example, as 59925081616 + 1581955186564 = 244796^2 + 1257758^2 .

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, 131134337 + ... + 131146856.

It is an arithmetic number, because the mean of its divisors is an integer number (144123516103).

Almost surely, 2^{1641880268180} is an apocalyptic number.

1641880268180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641880268180 is an abundant number, since it is smaller than the sum of its proper divisors (1817084118292).

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

1641880268180 is a wasteful number, since it uses less digits than its factorization.

1641880268180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262281515 (or 262281513 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 53.

The spelling of 1641880268180 in words is "one trillion, six hundred forty-one billion, eight hundred eighty million, two hundred sixty-eight thousand, one hundred eighty".