2182521450377 has 4 divisors (see below), whose sum is σ = 2235753680916. Its totient is φ = 2129289219840.

The previous prime is 2182521450301. The next prime is 2182521450391. The reversal of 2182521450377 is 7730541252812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1197774836041 + 984746614336 = 1094429^2 + 992344^2 .

It is a cyclic number.

It is not a de Polignac number, because 2182521450377 - 2²⁰ = 2182520401801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2182521450877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26616115208 + ... + 26616115289.

It is an arithmetic number, because the mean of its divisors is an integer number (558938420229).

Almost surely, 2^{2182521450377} is an apocalyptic number.

It is an amenable number.

2182521450377 is a deficient number, since it is larger than the sum of its proper divisors (53232230539).

2182521450377 is an equidigital number, since it uses as much as digits as its factorization.

2182521450377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53232230538.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 2182521450377 in words is "two trillion, one hundred eighty-two billion, five hundred twenty-one million, four hundred fifty thousand, three hundred seventy-seven".