2145336454566 has 24 divisors (see below), whose sum is σ = 4648261606560. Its totient is φ = 715107132816.

The previous prime is 2145336454531. The next prime is 2145336454571. The reversal of 2145336454566 is 6654546335412.

2145336454566 is a `hidden beast` number, since 2 + 1 + 4 + 5 + 3 + 36 + 4 + 545 + 66 = 666.

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, 2951716 + ... + 3606008.

It is an arithmetic number, because the mean of its divisors is an integer number (193677566940).

Almost surely, 2^{2145336454566} is an apocalyptic number.

2145336454566 is an abundant number, since it is smaller than the sum of its proper divisors (2502925151994).

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

2145336454566 is a wasteful number, since it uses less digits than its factorization.

2145336454566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836460 (or 836457 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 54.

The spelling of 2145336454566 in words is "two trillion, one hundred forty-five billion, three hundred thirty-six million, four hundred fifty-four thousand, five hundred sixty-six".