26430666203 has 2 divisors, whose sum is σ = 26430666204. Its totient is φ = 26430666202.

The previous prime is 26430666181. The next prime is 26430666211. The reversal of 26430666203 is 30266603462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26430666203 - 2¹⁸ = 26430404059 is a prime.

It is not a weakly prime, because it can be changed into another prime (26430666263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13215333101 + 13215333102.

It is an arithmetic number, because the mean of its divisors is an integer number (13215333102).

Almost surely, 2^26430666203 is an apocalyptic number.

26430666203 is a deficient number, since it is larger than the sum of its proper divisors (1).

26430666203 is an equidigital number, since it uses as much as digits as its factorization.

26430666203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 26430666203 in words is "twenty-six billion, four hundred thirty million, six hundred sixty-six thousand, two hundred three".