96722447821 has 2 divisors, whose sum is σ = 96722447822. Its totient is φ = 96722447820.

The previous prime is 96722447797. The next prime is 96722447827. The reversal of 96722447821 is 12874422769.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74427478596 + 22294969225 = 272814^2 + 149315^2 .

It is a cyclic number.

It is not a de Polignac number, because 96722447821 - 2¹³ = 96722439629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (96722447827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48361223910 + 48361223911.

It is an arithmetic number, because the mean of its divisors is an integer number (48361223911).

Almost surely, 2^96722447821 is an apocalyptic number.

It is an amenable number.

96722447821 is a deficient number, since it is larger than the sum of its proper divisors (1).

96722447821 is an equidigital number, since it uses as much as digits as its factorization.

96722447821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 52.

The spelling of 96722447821 in words is "ninety-six billion, seven hundred twenty-two million, four hundred forty-seven thousand, eight hundred twenty-one".