102378881117 has 2 divisors, whose sum is σ = 102378881118. Its totient is φ = 102378881116.

The previous prime is 102378881083. The next prime is 102378881147. The reversal of 102378881117 is 711188873201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97915171396 + 4463709721 = 312914^2 + 66811^2 .

It is a cyclic number.

It is not a de Polignac number, because 102378881117 - 2²⁶ = 102311772253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102378881147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51189440558 + 51189440559.

It is an arithmetic number, because the mean of its divisors is an integer number (51189440559).

Almost surely, 2^102378881117 is an apocalyptic number.

It is an amenable number.

102378881117 is a deficient number, since it is larger than the sum of its proper divisors (1).

102378881117 is an equidigital number, since it uses as much as digits as its factorization.

102378881117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150528, while the sum is 47.

The spelling of 102378881117 in words is "one hundred two billion, three hundred seventy-eight million, eight hundred eighty-one thousand, one hundred seventeen".