72323622533 has 2 divisors, whose sum is σ = 72323622534. Its totient is φ = 72323622532.

The previous prime is 72323622473. The next prime is 72323622559. The reversal of 72323622533 is 33522632327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70637945284 + 1685677249 = 265778^2 + 41057^2 .

It is a cyclic number.

It is not a de Polignac number, because 72323622533 - 2⁸ = 72323622277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72323622233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36161811266 + 36161811267.

It is an arithmetic number, because the mean of its divisors is an integer number (36161811267).

Almost surely, 2^72323622533 is an apocalyptic number.

It is an amenable number.

72323622533 is a deficient number, since it is larger than the sum of its proper divisors (1).

72323622533 is an equidigital number, since it uses as much as digits as its factorization.

72323622533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 38.

The spelling of 72323622533 in words is "seventy-two billion, three hundred twenty-three million, six hundred twenty-two thousand, five hundred thirty-three".