26405553361 has 8 divisors (see below), whose sum is σ = 29032879104. Its totient is φ = 23816031120.

The previous prime is 26405553353. The next prime is 26405553389. The reversal of 26405553361 is 16335550462.

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

It is a cyclic number.

It is not a de Polignac number, because 26405553361 - 2³ = 26405553353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26405553061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9449410 + ... + 9452203.

It is an arithmetic number, because the mean of its divisors is an integer number (3629109888).

Almost surely, 2^26405553361 is an apocalyptic number.

It is an amenable number.

26405553361 is a deficient number, since it is larger than the sum of its proper divisors (2627325743).

26405553361 is a wasteful number, since it uses less digits than its factorization.

26405553361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18901751.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 26405553361 in words is "twenty-six billion, four hundred five million, five hundred fifty-three thousand, three hundred sixty-one".