102505043504077 has 2 divisors, whose sum is σ = 102505043504078. Its totient is φ = 102505043504076.

The previous prime is 102505043503997. The next prime is 102505043504093. The reversal of 102505043504077 is 770405340505201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81202194023076 + 21302849481001 = 9011226^2 + 4615501^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102505043504077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102505043504477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51252521752038 + 51252521752039.

It is an arithmetic number, because the mean of its divisors is an integer number (51252521752039).

Almost surely, 2^{102505043504077} is an apocalyptic number.

It is an amenable number.

102505043504077 is a deficient number, since it is larger than the sum of its proper divisors (1).

102505043504077 is an equidigital number, since it uses as much as digits as its factorization.

102505043504077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588000, while the sum is 43.

The spelling of 102505043504077 in words is "one hundred two trillion, five hundred five billion, forty-three million, five hundred four thousand, seventy-seven".