26356051478 has 4 divisors (see below), whose sum is σ = 39534077220. Its totient is φ = 13178025738.

The previous prime is 26356051471. The next prime is 26356051531. The reversal of 26356051478 is 87415065362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87415065362 = 2 ⋅43707532681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26356051471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6589012868 + ... + 6589012871.

It is an arithmetic number, because the mean of its divisors is an integer number (9883519305).

Almost surely, 2^26356051478 is an apocalyptic number.

26356051478 is a deficient number, since it is larger than the sum of its proper divisors (13178025742).

26356051478 is a wasteful number, since it uses less digits than its factorization.

26356051478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13178025741.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 26356051478 in words is "twenty-six billion, three hundred fifty-six million, fifty-one thousand, four hundred seventy-eight".