42764450857 has 2 divisors, whose sum is σ = 42764450858. Its totient is φ = 42764450856.

The previous prime is 42764450797. The next prime is 42764450899. The reversal of 42764450857 is 75805446724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35488531456 + 7275919401 = 188384^2 + 85299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42764450857 is a prime.

It is not a weakly prime, because it can be changed into another prime (42764400857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21382225428 + 21382225429.

It is an arithmetic number, because the mean of its divisors is an integer number (21382225429).

Almost surely, 2^42764450857 is an apocalyptic number.

It is an amenable number.

42764450857 is a deficient number, since it is larger than the sum of its proper divisors (1).

42764450857 is an equidigital number, since it uses as much as digits as its factorization.

42764450857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7526400, while the sum is 52.

The spelling of 42764450857 in words is "forty-two billion, seven hundred sixty-four million, four hundred fifty thousand, eight hundred fifty-seven".