102077760662261 has 2 divisors, whose sum is σ = 102077760662262. Its totient is φ = 102077760662260.

The previous prime is 102077760662191. The next prime is 102077760662263. The reversal of 102077760662261 is 162266067770201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66914117811025 + 35163642851236 = 8180105^2 + 5929894^2 .

It is a cyclic number.

It is not a de Polignac number, because 102077760662261 - 2¹⁴ = 102077760645877 is a prime.

Together with 102077760662263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102077760662263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51038880331130 + 51038880331131.

It is an arithmetic number, because the mean of its divisors is an integer number (51038880331131).

Almost surely, 2^{102077760662261} is an apocalyptic number.

It is an amenable number.

102077760662261 is a deficient number, since it is larger than the sum of its proper divisors (1).

102077760662261 is an equidigital number, since it uses as much as digits as its factorization.

102077760662261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 102077760662261 in words is "one hundred two trillion, seventy-seven billion, seven hundred sixty million, six hundred sixty-two thousand, two hundred sixty-one".