2021392424844 has 72 divisors (see below), whose sum is σ = 5503320324320. Its totient is φ = 621894454272.

The previous prime is 2021392424813. The next prime is 2021392424873. The reversal of 2021392424844 is 4484242931202.

2021392424844 is a `hidden beast` number, since 2 + 0 + 213 + 9 + 2 + 424 + 8 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2021392424844.

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, 3841737 + ... + 4336095.

Almost surely, 2^{2021392424844} is an apocalyptic number.

It is an amenable number.

2021392424844 is an abundant number, since it is smaller than the sum of its proper divisors (3481927899476).

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

2021392424844 is a wasteful number, since it uses less digits than its factorization.

2021392424844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503119 (or 503114 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 45.

The spelling of 2021392424844 in words is "two trillion, twenty-one billion, three hundred ninety-two million, four hundred twenty-four thousand, eight hundred forty-four".