2924821664521 has 9 divisors (see below), whose sum is σ = 3057557907271. Its totient is φ = 2797617880552.

The previous prime is 2924821664497. The next prime is 2924821664533. The reversal of 2924821664521 is 1254661284292.

The square root of 2924821664521 is 1710211.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 157136924025 + 2767684740496 = 396405^2 + 1663636^2 .

It is not a de Polignac number, because 2924821664521 - 2³¹ = 2922674180873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2924821664551) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 39297675 + ... + 39372031.

Almost surely, 2^{2924821664521} is an apocalyptic number.

2924821664521 is the 1710211-st square number.

2924821664521 is the 855106-th centered octagonal number.

It is an amenable number.

2924821664521 is a deficient number, since it is larger than the sum of its proper divisors (132736242750).

2924821664521 is an frugal number, since it uses more digits than its factorization.

2924821664521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148760 (or 74380 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 52.

The spelling of 2924821664521 in words is "two trillion, nine hundred twenty-four billion, eight hundred twenty-one million, six hundred sixty-four thousand, five hundred twenty-one".