73448644037 has 2 divisors, whose sum is σ = 73448644038. Its totient is φ = 73448644036.

The previous prime is 73448644021. The next prime is 73448644099. The reversal of 73448644037 is 73044684437.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63480818116 + 9967825921 = 251954^2 + 99839^2 .

It is a cyclic number.

It is not a de Polignac number, because 73448644037 - 2⁴ = 73448644021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73448640037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36724322018 + 36724322019.

It is an arithmetic number, because the mean of its divisors is an integer number (36724322019).

Almost surely, 2^73448644037 is an apocalyptic number.

It is an amenable number.

73448644037 is a deficient number, since it is larger than the sum of its proper divisors (1).

73448644037 is an equidigital number, since it uses as much as digits as its factorization.

73448644037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5419008, while the sum is 50.

The spelling of 73448644037 in words is "seventy-three billion, four hundred forty-eight million, six hundred forty-four thousand, thirty-seven".