76868626489 has 2 divisors, whose sum is σ = 76868626490. Its totient is φ = 76868626488.

The previous prime is 76868626423. The next prime is 76868626501. The reversal of 76868626489 is 98462686867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58229550864 + 18639075625 = 241308^2 + 136525^2 .

It is a cyclic number.

It is not a de Polignac number, because 76868626489 - 2⁷ = 76868626361 is a prime.

It is not a weakly prime, because it can be changed into another prime (76868626889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38434313244 + 38434313245.

It is an arithmetic number, because the mean of its divisors is an integer number (38434313245).

Almost surely, 2^76868626489 is an apocalyptic number.

It is an amenable number.

76868626489 is a deficient number, since it is larger than the sum of its proper divisors (1).

76868626489 is an equidigital number, since it uses as much as digits as its factorization.

76868626489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 334430208, while the sum is 70.

The spelling of 76868626489 in words is "seventy-six billion, eight hundred sixty-eight million, six hundred twenty-six thousand, four hundred eighty-nine".