26538083993 has 4 divisors (see below), whose sum is σ = 26654992080. Its totient is φ = 26421175908.

The previous prime is 26538083989. The next prime is 26538084017. The reversal of 26538083993 is 39938083562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26538083993 - 2² = 26538083989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26538083983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58453703 + ... + 58454156.

It is an arithmetic number, because the mean of its divisors is an integer number (6663748020).

Almost surely, 2^26538083993 is an apocalyptic number.

It is an amenable number.

26538083993 is a deficient number, since it is larger than the sum of its proper divisors (116908087).

26538083993 is a wasteful number, since it uses less digits than its factorization.

26538083993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116908086.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 26538083993 in words is "twenty-six billion, five hundred thirty-eight million, eighty-three thousand, nine hundred ninety-three".