77102998873 has 2 divisors, whose sum is σ = 77102998874. Its totient is φ = 77102998872.

The previous prime is 77102998793. The next prime is 77102998913. The reversal of 77102998873 is 37889920177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40065226569 + 37037772304 = 200163^2 + 192452^2 .

It is an emirp because it is prime and its reverse (37889920177) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77102998873 is a prime.

It is not a weakly prime, because it can be changed into another prime (77102998073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38551499436 + 38551499437.

It is an arithmetic number, because the mean of its divisors is an integer number (38551499437).

Almost surely, 2^77102998873 is an apocalyptic number.

It is an amenable number.

77102998873 is a deficient number, since it is larger than the sum of its proper divisors (1).

77102998873 is an equidigital number, since it uses as much as digits as its factorization.

77102998873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10668672, while the sum is 61.

The spelling of 77102998873 in words is "seventy-seven billion, one hundred two million, nine hundred ninety-eight thousand, eight hundred seventy-three".