73641536663 has 2 divisors, whose sum is σ = 73641536664. Its totient is φ = 73641536662.

The previous prime is 73641536659. The next prime is 73641536699. The reversal of 73641536663 is 36663514637.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73641536663 - 2² = 73641536659 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73641536653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36820768331 + 36820768332.

It is an arithmetic number, because the mean of its divisors is an integer number (36820768332).

Almost surely, 2^73641536663 is an apocalyptic number.

73641536663 is a deficient number, since it is larger than the sum of its proper divisors (1).

73641536663 is an equidigital number, since it uses as much as digits as its factorization.

73641536663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 50.

The spelling of 73641536663 in words is "seventy-three billion, six hundred forty-one million, five hundred thirty-six thousand, six hundred sixty-three".