26556404646 has 8 divisors (see below), whose sum is σ = 53112809304. Its totient is φ = 8852134880.

The previous prime is 26556404621. The next prime is 26556404653. The reversal of 26556404646 is 64640465562.

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

26556404646 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 26556404595 and 26556404604.

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, 2213033715 + ... + 2213033726.

It is an arithmetic number, because the mean of its divisors is an integer number (6639101163).

Almost surely, 2^26556404646 is an apocalyptic number.

26556404646 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.

26556404646 is a wasteful number, since it uses less digits than its factorization.

26556404646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4426067446.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 26556404646 in words is "twenty-six billion, five hundred fifty-six million, four hundred four thousand, six hundred forty-six".