2021513011564 has 96 divisors (see below), whose sum is σ = 4032758016000. Its totient is φ = 881355171840.

The previous prime is 2021513011459. The next prime is 2021513011579. The reversal of 2021513011564 is 4651103151202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8799837 + ... + 9026635.

It is an arithmetic number, because the mean of its divisors is an integer number (42007896000).

Almost surely, 2^{2021513011564} is an apocalyptic number.

It is an amenable number.

2021513011564 is a deficient number, since it is larger than the sum of its proper divisors (2011245004436).

2021513011564 is a wasteful number, since it uses less digits than its factorization.

2021513011564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227023 (or 227021 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 2021513011564 its reverse (4651103151202), we get a palindrome (6672616162766).

The spelling of 2021513011564 in words is "two trillion, twenty-one billion, five hundred thirteen million, eleven thousand, five hundred sixty-four".