77502580073 has 2 divisors, whose sum is σ = 77502580074. Its totient is φ = 77502580072.

The previous prime is 77502580063. The next prime is 77502580091. The reversal of 77502580073 is 37008520577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62524002304 + 14978577769 = 250048^2 + 122387^2 .

It is a cyclic number.

It is not a de Polignac number, because 77502580073 - 2¹² = 77502575977 is a prime.

It is not a weakly prime, because it can be changed into another prime (77502580033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38751290036 + 38751290037.

It is an arithmetic number, because the mean of its divisors is an integer number (38751290037).

Almost surely, 2^77502580073 is an apocalyptic number.

It is an amenable number.

77502580073 is a deficient number, since it is larger than the sum of its proper divisors (1).

77502580073 is an equidigital number, since it uses as much as digits as its factorization.

77502580073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 77502580073 in words is "seventy-seven billion, five hundred two million, five hundred eighty thousand, seventy-three".