26994638999 has 2 divisors, whose sum is σ = 26994639000. Its totient is φ = 26994638998.

The previous prime is 26994638971. The next prime is 26994639037. The reversal of 26994638999 is 99983649962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26994638999 - 2²⁴ = 26977861783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26994638399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13497319499 + 13497319500.

It is an arithmetic number, because the mean of its divisors is an integer number (13497319500).

Almost surely, 2^26994638999 is an apocalyptic number.

26994638999 is a deficient number, since it is larger than the sum of its proper divisors (1).

26994638999 is an equidigital number, since it uses as much as digits as its factorization.

26994638999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408146688, while the sum is 74.

The spelling of 26994638999 in words is "twenty-six billion, nine hundred ninety-four million, six hundred thirty-eight thousand, nine hundred ninety-nine".