4972663622809 has 9 divisors (see below), whose sum is σ = 4988472621951. Its totient is φ = 4956904587360.

The previous prime is 4972663622753. The next prime is 4972663622831. The reversal of 4972663622809 is 9082263662794.

The square root of 4972663622809 is 2229947.

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., 2540086875225 + 2432576747584 = 1593765^2 + 1559672^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4972663622809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4972663622869) 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, 738109089 + ... + 738115825.

Almost surely, 2^{4972663622809} is an apocalyptic number.

4972663622809 is the 2229947-th square number.

4972663622809 is the 1114974-th centered octagonal number.

It is an amenable number.

4972663622809 is a deficient number, since it is larger than the sum of its proper divisors (15808999142).

4972663622809 is an frugal number, since it uses more digits than its factorization.

4972663622809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14136 (or 7068 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 64.

Multiplying 4972663622809 by its sum of digits (64), we get a square (318250471859776 = 17839576²).

The spelling of 4972663622809 in words is "four trillion, nine hundred seventy-two billion, six hundred sixty-three million, six hundred twenty-two thousand, eight hundred nine".