1645266682386 has 24 divisors (see below), whose sum is σ = 3569491171584. Its totient is φ = 547691967000.

The previous prime is 1645266682373. The next prime is 1645266682393. The reversal of 1645266682386 is 6832866625461.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60841146 + ... + 60868181.

It is an arithmetic number, because the mean of its divisors is an integer number (148728798816).

Almost surely, 2^{1645266682386} is an apocalyptic number.

1645266682386 is an abundant number, since it is smaller than the sum of its proper divisors (1924224489198).

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

1645266682386 is a wasteful number, since it uses less digits than its factorization.

1645266682386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121710086 (or 121710083 counting only the distinct ones).

The product of its digits is 119439360, while the sum is 63.

The spelling of 1645266682386 in words is "one trillion, six hundred forty-five billion, two hundred sixty-six million, six hundred eighty-two thousand, three hundred eighty-six".