26355262878 has 48 divisors (see below), whose sum is σ = 66649190400. Its totient is φ = 7369859088.

The previous prime is 26355262873. The next prime is 26355262907. The reversal of 26355262878 is 87826255362.

It is a happy number.

26355262878 is a `hidden beast` number, since 2 + 6 + 3 + 5 + 5 + 2 + 628 + 7 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26355262873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2219278 + ... + 2231121.

It is an arithmetic number, because the mean of its divisors is an integer number (1388524800).

Almost surely, 2^26355262878 is an apocalyptic number.

26355262878 is an abundant number, since it is smaller than the sum of its proper divisors (40293927522).

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

26355262878 is a wasteful number, since it uses less digits than its factorization.

26355262878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450461 (or 4450458 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 26355262878 in words is "twenty-six billion, three hundred fifty-five million, two hundred sixty-two thousand, eight hundred seventy-eight".