73307638633 has 2 divisors, whose sum is σ = 73307638634. Its totient is φ = 73307638632.

The previous prime is 73307638631. The next prime is 73307638681. The reversal of 73307638633 is 33683670337.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63623504169 + 9684134464 = 252237^2 + 98408^2 .

It is a cyclic number.

It is not a de Polignac number, because 73307638633 - 2¹ = 73307638631 is a prime.

Together with 73307638631, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73307638631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36653819316 + 36653819317.

It is an arithmetic number, because the mean of its divisors is an integer number (36653819317).

Almost surely, 2^73307638633 is an apocalyptic number.

It is an amenable number.

73307638633 is a deficient number, since it is larger than the sum of its proper divisors (1).

73307638633 is an equidigital number, since it uses as much as digits as its factorization.

73307638633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 49.

The spelling of 73307638633 in words is "seventy-three billion, three hundred seven million, six hundred thirty-eight thousand, six hundred thirty-three".