2021516545044 has 48 divisors (see below), whose sum is σ = 4787810395200. Its totient is φ = 663707041536.

The previous prime is 2021516545033. The next prime is 2021516545057. The reversal of 2021516545044 is 4405456151202.

It is a junction number, because it is equal to n+sod(n) for n = 2021516544993 and 2021516545011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7267522 + ... + 7540550.

It is an arithmetic number, because the mean of its divisors is an integer number (99746049900).

Almost surely, 2^{2021516545044} is an apocalyptic number.

It is an amenable number.

2021516545044 is an abundant number, since it is smaller than the sum of its proper divisors (2766293850156).

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

2021516545044 is a wasteful number, since it uses less digits than its factorization.

2021516545044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282312 (or 282310 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 2021516545044 in words is "two trillion, twenty-one billion, five hundred sixteen million, five hundred forty-five thousand, forty-four".