766875578639 has 2 divisors, whose sum is σ = 766875578640. Its totient is φ = 766875578638.

The previous prime is 766875578551. The next prime is 766875578671. The reversal of 766875578639 is 936875578667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 766875578639 - 2³² = 762580611343 is a prime.

It is a super-2 number, since 2×766875578639² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 766875578639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766875571639) 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, 383437789319 + 383437789320.

It is an arithmetic number, because the mean of its divisors is an integer number (383437789320).

Almost surely, 2^766875578639 is an apocalyptic number.

766875578639 is a deficient number, since it is larger than the sum of its proper divisors (1).

766875578639 is an equidigital number, since it uses as much as digits as its factorization.

766875578639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3200601600, while the sum is 77.

The spelling of 766875578639 in words is "seven hundred sixty-six billion, eight hundred seventy-five million, five hundred seventy-eight thousand, six hundred thirty-nine".