77757347831039 has 2 divisors, whose sum is σ = 77757347831040. Its totient is φ = 77757347831038.

The previous prime is 77757347831027. The next prime is 77757347831113. The reversal of 77757347831039 is 93013874375777.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77757347831039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77757347831939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38878673915519 + 38878673915520.

It is an arithmetic number, because the mean of its divisors is an integer number (38878673915520).

Almost surely, 2^{77757347831039} is an apocalyptic number.

77757347831039 is a deficient number, since it is larger than the sum of its proper divisors (1).

77757347831039 is an equidigital number, since it uses as much as digits as its factorization.

77757347831039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653456160, while the sum is 71.

The spelling of 77757347831039 in words is "seventy-seven trillion, seven hundred fifty-seven billion, three hundred forty-seven million, eight hundred thirty-one thousand, thirty-nine".