102893778877 has 2 divisors, whose sum is σ = 102893778878. Its totient is φ = 102893778876.

The previous prime is 102893778781. The next prime is 102893778899. The reversal of 102893778877 is 778877398201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102865167076 + 28611801 = 320726^2 + 5349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102893778877 is a prime.

It is a super-2 number, since 2×102893778877² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102893770877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51446889438 + 51446889439.

It is an arithmetic number, because the mean of its divisors is an integer number (51446889439).

Almost surely, 2^102893778877 is an apocalyptic number.

It is an amenable number.

102893778877 is a deficient number, since it is larger than the sum of its proper divisors (1).

102893778877 is an equidigital number, since it uses as much as digits as its factorization.

102893778877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66382848, while the sum is 67.

The spelling of 102893778877 in words is "one hundred two billion, eight hundred ninety-three million, seven hundred seventy-eight thousand, eight hundred seventy-seven".