2045764821816 has 96 divisors (see below), whose sum is σ = 5548669776000. Its totient is φ = 680930597952.

The previous prime is 2045764821761. The next prime is 2045764821857. The reversal of 2045764821816 is 6181284675402.

2045764821816 is a `hidden beast` number, since 2 + 0 + 4 + 576 + 48 + 2 + 18 + 16 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307214695 + ... + 307221353.

It is an arithmetic number, because the mean of its divisors is an integer number (57798643500).

Almost surely, 2^{2045764821816} is an apocalyptic number.

It is an amenable number.

2045764821816 is an abundant number, since it is smaller than the sum of its proper divisors (3502904954184).

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

2045764821816 is a wasteful number, since it uses less digits than its factorization.

2045764821816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12233 (or 12226 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 2045764821816 in words is "two trillion, forty-five billion, seven hundred sixty-four million, eight hundred twenty-one thousand, eight hundred sixteen".