77701890733 has 2 divisors, whose sum is σ = 77701890734. Its totient is φ = 77701890732.

The previous prime is 77701890731. The next prime is 77701890779. The reversal of 77701890733 is 33709810777.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76949650404 + 752240329 = 277398^2 + 27427^2 .

It is a cyclic number.

It is not a de Polignac number, because 77701890733 - 2¹ = 77701890731 is a prime.

Together with 77701890731, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77701890731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38850945366 + 38850945367.

It is an arithmetic number, because the mean of its divisors is an integer number (38850945367).

Almost surely, 2^77701890733 is an apocalyptic number.

It is an amenable number.

77701890733 is a deficient number, since it is larger than the sum of its proper divisors (1).

77701890733 is an equidigital number, since it uses as much as digits as its factorization.

77701890733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555848, while the sum is 52.

The spelling of 77701890733 in words is "seventy-seven billion, seven hundred one million, eight hundred ninety thousand, seven hundred thirty-three".