472445717621 has 2 divisors, whose sum is σ = 472445717622. Its totient is φ = 472445717620.

The previous prime is 472445717587. The next prime is 472445717677. The reversal of 472445717621 is 126717544274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237622126225 + 234823591396 = 487465^2 + 484586^2 .

It is a cyclic number.

It is not a de Polignac number, because 472445717621 - 2¹⁰ = 472445716597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 472445717621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472445717221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236222858810 + 236222858811.

It is an arithmetic number, because the mean of its divisors is an integer number (236222858811).

Almost surely, 2^472445717621 is an apocalyptic number.

It is an amenable number.

472445717621 is a deficient number, since it is larger than the sum of its proper divisors (1).

472445717621 is an equidigital number, since it uses as much as digits as its factorization.

472445717621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2634240, while the sum is 50.

The spelling of 472445717621 in words is "four hundred seventy-two billion, four hundred forty-five million, seven hundred seventeen thousand, six hundred twenty-one".