72821326967 has 2 divisors, whose sum is σ = 72821326968. Its totient is φ = 72821326966.

The previous prime is 72821326909. The next prime is 72821326987. The reversal of 72821326967 is 76962312827.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72821326967 is a prime.

It is a super-2 number, since 2×72821326967² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72821326987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36410663483 + 36410663484.

It is an arithmetic number, because the mean of its divisors is an integer number (36410663484).

Almost surely, 2^72821326967 is an apocalyptic number.

72821326967 is a deficient number, since it is larger than the sum of its proper divisors (1).

72821326967 is an equidigital number, since it uses as much as digits as its factorization.

72821326967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 53.

The spelling of 72821326967 in words is "seventy-two billion, eight hundred twenty-one million, three hundred twenty-six thousand, nine hundred sixty-seven".