102077760644891 has 2 divisors, whose sum is σ = 102077760644892. Its totient is φ = 102077760644890.

The previous prime is 102077760644801. The next prime is 102077760644929. The reversal of 102077760644891 is 198446067770201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102077760644891 is a prime.

It is not a weakly prime, because it can be changed into another prime (102077760644801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51038880322445 + 51038880322446.

It is an arithmetic number, because the mean of its divisors is an integer number (51038880322446).

Almost surely, 2^{102077760644891} is an apocalyptic number.

102077760644891 is a deficient number, since it is larger than the sum of its proper divisors (1).

102077760644891 is an equidigital number, since it uses as much as digits as its factorization.

102077760644891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28449792, while the sum is 62.

The spelling of 102077760644891 in words is "one hundred two trillion, seventy-seven billion, seven hundred sixty million, six hundred forty-four thousand, eight hundred ninety-one".