73044621149 has 2 divisors, whose sum is σ = 73044621150. Its totient is φ = 73044621148.

The previous prime is 73044621077. The next prime is 73044621197. The reversal of 73044621149 is 94112644037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72998313124 + 46308025 = 270182^2 + 6805^2 .

It is an emirp because it is prime and its reverse (94112644037) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73044621149 - 2²⁸ = 72776185693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73044620149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36522310574 + 36522310575.

It is an arithmetic number, because the mean of its divisors is an integer number (36522310575).

Almost surely, 2^73044621149 is an apocalyptic number.

It is an amenable number.

73044621149 is a deficient number, since it is larger than the sum of its proper divisors (1).

73044621149 is an equidigital number, since it uses as much as digits as its factorization.

73044621149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 73044621149 in words is "seventy-three billion, forty-four million, six hundred twenty-one thousand, one hundred forty-nine".