26278025445 has 96 divisors (see below), whose sum is σ = 52938842112. Its totient is φ = 11809708416.

The previous prime is 26278025429. The next prime is 26278025447. The reversal of 26278025445 is 54452087262.

26278025445 is a `hidden beast` number, since 2 + 6 + 27 + 80 + 2 + 544 + 5 = 666.

It is not a de Polignac number, because 26278025445 - 2⁴ = 26278025429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 26278025445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26278025447) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14413804 + ... + 14415626.

It is an arithmetic number, because the mean of its divisors is an integer number (551446272).

Almost surely, 2^26278025445 is an apocalyptic number.

It is an amenable number.

26278025445 is an abundant number, since it is smaller than the sum of its proper divisors (26660816667).

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

26278025445 is a wasteful number, since it uses less digits than its factorization.

26278025445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591 (or 2588 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The spelling of 26278025445 in words is "twenty-six billion, two hundred seventy-eight million, twenty-five thousand, four hundred forty-five".