26198400947 has 2 divisors, whose sum is σ = 26198400948. Its totient is φ = 26198400946.

The previous prime is 26198400913. The next prime is 26198400959. The reversal of 26198400947 is 74900489162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26198400947 - 2²⁸ = 25929965491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26198400895 and 26198400904.

It is not a weakly prime, because it can be changed into another prime (26198400997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13099200473 + 13099200474.

It is an arithmetic number, because the mean of its divisors is an integer number (13099200474).

Almost surely, 2^26198400947 is an apocalyptic number.

26198400947 is a deficient number, since it is larger than the sum of its proper divisors (1).

26198400947 is an equidigital number, since it uses as much as digits as its factorization.

26198400947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 26198400947 in words is "twenty-six billion, one hundred ninety-eight million, four hundred thousand, nine hundred forty-seven".