1687450362361 has 3 divisors (see below), whose sum is σ = 1687451661381. Its totient is φ = 1687449063342.

The previous prime is 1687450362347. The next prime is 1687450362401. The reversal of 1687450362361 is 1632630547861.

The square root of 1687450362361 is 1299019.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1687450362361 - 2²⁵ = 1687416807929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1687450362299 and 1687450362308.

It is not an unprimeable number, because it can be changed into a prime (1687450362061) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 649510 + ... + 1948528.

It is an arithmetic number, because the mean of its divisors is an integer number (562483887127).

Almost surely, 2^{1687450362361} is an apocalyptic number.

1687450362361 is the 1299019-th square number.

1687450362361 is the 649510-th centered octagonal number.

It is an amenable number.

1687450362361 is a deficient number, since it is larger than the sum of its proper divisors (1299020).

1687450362361 is an frugal number, since it uses more digits than its factorization.

1687450362361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598038 (or 1299019 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 1687450362361 in words is "one trillion, six hundred eighty-seven billion, four hundred fifty million, three hundred sixty-two thousand, three hundred sixty-one".