26391390054 has 8 divisors (see below), whose sum is σ = 52782780120. Its totient is φ = 8797130016.

The previous prime is 26391390017. The next prime is 26391390071. The reversal of 26391390054 is 45009319362.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

26391390054 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 26391389988 and 26391390015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2199282499 + ... + 2199282510.

It is an arithmetic number, because the mean of its divisors is an integer number (6597847515).

Almost surely, 2^26391390054 is an apocalyptic number.

26391390054 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26391390054 is a wasteful number, since it uses less digits than its factorization.

26391390054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398565014.

The product of its (nonzero) digits is 174960, while the sum is 42.

The spelling of 26391390054 in words is "twenty-six billion, three hundred ninety-one million, three hundred ninety thousand, fifty-four".