77552522273 has 2 divisors, whose sum is σ = 77552522274. Its totient is φ = 77552522272.

The previous prime is 77552522269. The next prime is 77552522347. The reversal of 77552522273 is 37222525577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67804514449 + 9748007824 = 260393^2 + 98732^2 .

It is a cyclic number.

It is not a de Polignac number, because 77552522273 - 2² = 77552522269 is a prime.

It is a super-2 number, since 2×77552522273² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77552512273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38776261136 + 38776261137.

It is an arithmetic number, because the mean of its divisors is an integer number (38776261137).

Almost surely, 2^77552522273 is an apocalyptic number.

It is an amenable number.

77552522273 is a deficient number, since it is larger than the sum of its proper divisors (1).

77552522273 is an equidigital number, since it uses as much as digits as its factorization.

77552522273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2058000, while the sum is 47.

The spelling of 77552522273 in words is "seventy-seven billion, five hundred fifty-two million, five hundred twenty-two thousand, two hundred seventy-three".