26405645455 has 16 divisors (see below), whose sum is σ = 36235391040. Its totient is φ = 18095761152.

The previous prime is 26405645449. The next prime is 26405645477. The reversal of 26405645455 is 55454650462.

It is not a de Polignac number, because 26405645455 - 2¹⁵ = 26405612687 is a prime.

It is a super-2 number, since 2×26405645455² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169660 + ... + 285649.

It is an arithmetic number, because the mean of its divisors is an integer number (2264711940).

Almost surely, 2^26405645455 is an apocalyptic number.

26405645455 is a deficient number, since it is larger than the sum of its proper divisors (9829745585).

26405645455 is a wasteful number, since it uses less digits than its factorization.

26405645455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456978.

The product of its (nonzero) digits is 2880000, while the sum is 46.

The spelling of 26405645455 in words is "twenty-six billion, four hundred five million, six hundred forty-five thousand, four hundred fifty-five".