77373072241 has 2 divisors, whose sum is σ = 77373072242. Its totient is φ = 77373072240.

The previous prime is 77373072199. The next prime is 77373072269. The reversal of 77373072241 is 14227037377.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55945967841 + 21427104400 = 236529^2 + 146380^2 .

It is a cyclic number.

It is not a de Polignac number, because 77373072241 - 2⁷ = 77373072113 is a prime.

It is a super-2 number, since 2×77373072241² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77373072541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38686536120 + 38686536121.

It is an arithmetic number, because the mean of its divisors is an integer number (38686536121).

Almost surely, 2^77373072241 is an apocalyptic number.

It is an amenable number.

77373072241 is a deficient number, since it is larger than the sum of its proper divisors (1).

77373072241 is an equidigital number, since it uses as much as digits as its factorization.

77373072241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345744, while the sum is 43.

The spelling of 77373072241 in words is "seventy-seven billion, three hundred seventy-three million, seventy-two thousand, two hundred forty-one".