26890859774 has 4 divisors (see below), whose sum is σ = 40336289664. Its totient is φ = 13445429886.

The previous prime is 26890859761. The next prime is 26890859803. The reversal of 26890859774 is 47795809862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47795809862 = 2 ⋅23897904931.

It is a self number, because there is not a number n which added to its sum of digits gives 26890859774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6722714942 + ... + 6722714945.

It is an arithmetic number, because the mean of its divisors is an integer number (10084072416).

Almost surely, 2^26890859774 is an apocalyptic number.

26890859774 is a deficient number, since it is larger than the sum of its proper divisors (13445429890).

26890859774 is a wasteful number, since it uses less digits than its factorization.

26890859774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13445429889.

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 26890859774 in words is "twenty-six billion, eight hundred ninety million, eight hundred fifty-nine thousand, seven hundred seventy-four".