73441665251 has 2 divisors, whose sum is σ = 73441665252. Its totient is φ = 73441665250.

The previous prime is 73441665247. The next prime is 73441665313. The reversal of 73441665251 is 15256614437.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73441665251 - 2² = 73441665247 is a prime.

It is not a weakly prime, because it can be changed into another prime (73441665211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36720832625 + 36720832626.

It is an arithmetic number, because the mean of its divisors is an integer number (36720832626).

Almost surely, 2^73441665251 is an apocalyptic number.

73441665251 is a deficient number, since it is larger than the sum of its proper divisors (1).

73441665251 is an equidigital number, since it uses as much as digits as its factorization.

73441665251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 44.

The spelling of 73441665251 in words is "seventy-three billion, four hundred forty-one million, six hundred sixty-five thousand, two hundred fifty-one".