77968158701 has 2 divisors, whose sum is σ = 77968158702. Its totient is φ = 77968158700.

The previous prime is 77968158691. The next prime is 77968158731. The reversal of 77968158701 is 10785186977.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67638485476 + 10329673225 = 260074^2 + 101635^2 .

It is an emirp because it is prime and its reverse (10785186977) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77968158701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77968158731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38984079350 + 38984079351.

It is an arithmetic number, because the mean of its divisors is an integer number (38984079351).

Almost surely, 2^77968158701 is an apocalyptic number.

It is an amenable number.

77968158701 is a deficient number, since it is larger than the sum of its proper divisors (1).

77968158701 is an equidigital number, since it uses as much as digits as its factorization.

77968158701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5927040, while the sum is 59.

The spelling of 77968158701 in words is "seventy-seven billion, nine hundred sixty-eight million, one hundred fifty-eight thousand, seven hundred one".