26078254955543 has 24 divisors (see below), whose sum is σ = 30909116805840. Its totient is φ = 21930463376640.

The previous prime is 26078254955539. The next prime is 26078254955603. The reversal of 26078254955543 is 34555945287062.

It is a happy number.

It is not a de Polignac number, because 26078254955543 - 2² = 26078254955539 is a prime.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 26078254955543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26078254955503) 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, 119797343 + ... + 120014831.

It is an arithmetic number, because the mean of its divisors is an integer number (1287879866910).

Almost surely, 2^{26078254955543} is an apocalyptic number.

26078254955543 is a deficient number, since it is larger than the sum of its proper divisors (4830861850297).

26078254955543 is a wasteful number, since it uses less digits than its factorization.

26078254955543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263727 (or 263720 counting only the distinct ones).

The product of its (nonzero) digits is 362880000, while the sum is 65.

The spelling of 26078254955543 in words is "twenty-six trillion, seventy-eight billion, two hundred fifty-four million, nine hundred fifty-five thousand, five hundred forty-three".