77582251889 has 2 divisors, whose sum is σ = 77582251890. Its totient is φ = 77582251888.

The previous prime is 77582251867. The next prime is 77582251891. The reversal of 77582251889 is 98815228577.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53240947600 + 24341304289 = 230740^2 + 156017^2 .

It is a cyclic number.

It is not a de Polignac number, because 77582251889 - 2²⁴ = 77565474673 is a prime.

Together with 77582251891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77582251489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38791125944 + 38791125945.

It is an arithmetic number, because the mean of its divisors is an integer number (38791125945).

Almost surely, 2^77582251889 is an apocalyptic number.

It is an amenable number.

77582251889 is a deficient number, since it is larger than the sum of its proper divisors (1).

77582251889 is an equidigital number, since it uses as much as digits as its factorization.

77582251889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22579200, while the sum is 62.

The spelling of 77582251889 in words is "seventy-seven billion, five hundred eighty-two million, two hundred fifty-one thousand, eight hundred eighty-nine".