42786625979 has 2 divisors, whose sum is σ = 42786625980. Its totient is φ = 42786625978.

The previous prime is 42786625957. The next prime is 42786625993. The reversal of 42786625979 is 97952668724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42786625979 - 2²⁰ = 42785577403 is a prime.

It is not a weakly prime, because it can be changed into another prime (42786625949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21393312989 + 21393312990.

It is an arithmetic number, because the mean of its divisors is an integer number (21393312990).

Almost surely, 2^42786625979 is an apocalyptic number.

42786625979 is a deficient number, since it is larger than the sum of its proper divisors (1).

42786625979 is an equidigital number, since it uses as much as digits as its factorization.

42786625979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91445760, while the sum is 65.

The spelling of 42786625979 in words is "forty-two billion, seven hundred eighty-six million, six hundred twenty-five thousand, nine hundred seventy-nine".