9668372722531 has 2 divisors, whose sum is σ = 9668372722532. Its totient is φ = 9668372722530.

The previous prime is 9668372722501. The next prime is 9668372722537. The reversal of 9668372722531 is 1352272738669.

It is a strong prime.

It is an emirp because it is prime and its reverse (1352272738669) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9668372722531 - 2¹³ = 9668372714339 is a prime.

It is a super-2 number, since 2×9668372722531² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9668372722531.

It is not a weakly prime, because it can be changed into another prime (9668372722537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4834186361265 + 4834186361266.

It is an arithmetic number, because the mean of its divisors is an integer number (4834186361266).

Almost surely, 2^{9668372722531} is an apocalyptic number.

9668372722531 is a deficient number, since it is larger than the sum of its proper divisors (1).

9668372722531 is an equidigital number, since it uses as much as digits as its factorization.

9668372722531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45722880, while the sum is 61.

The spelling of 9668372722531 in words is "nine trillion, six hundred sixty-eight billion, three hundred seventy-two million, seven hundred twenty-two thousand, five hundred thirty-one".