73740646699 has 2 divisors, whose sum is σ = 73740646700. Its totient is φ = 73740646698.

The previous prime is 73740646697. The next prime is 73740646781. The reversal of 73740646699 is 99664604737.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73740646699 - 2¹ = 73740646697 is a prime.

Together with 73740646697, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73740646697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36870323349 + 36870323350.

It is an arithmetic number, because the mean of its divisors is an integer number (36870323350).

Almost surely, 2^73740646699 is an apocalyptic number.

73740646699 is a deficient number, since it is larger than the sum of its proper divisors (1).

73740646699 is an equidigital number, since it uses as much as digits as its factorization.

73740646699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41150592, while the sum is 61.

The spelling of 73740646699 in words is "seventy-three billion, seven hundred forty million, six hundred forty-six thousand, six hundred ninety-nine".