102018903244891 has 2 divisors, whose sum is σ = 102018903244892. Its totient is φ = 102018903244890.

The previous prime is 102018903244793. The next prime is 102018903244901. The reversal of 102018903244891 is 198442309810201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102018903244891 - 2¹³ = 102018903236699 is a prime.

It is not a weakly prime, because it can be changed into another prime (102018903274891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51009451622445 + 51009451622446.

It is an arithmetic number, because the mean of its divisors is an integer number (51009451622446).

Almost surely, 2^{102018903244891} is an apocalyptic number.

102018903244891 is a deficient number, since it is larger than the sum of its proper divisors (1).

102018903244891 is an equidigital number, since it uses as much as digits as its factorization.

102018903244891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 102018903244891 in words is "one hundred two trillion, eighteen billion, nine hundred three million, two hundred forty-four thousand, eight hundred ninety-one".