26897928916 has 12 divisors (see below), whose sum is σ = 47371194388. Its totient is φ = 13363301952.

The previous prime is 26897928913. The next prime is 26897928943. The reversal of 26897928916 is 61982979862.

It can be written as a sum of positive squares in 2 ways, for example, as 13631496516 + 13266432400 = 116754^2 + 115180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26897928913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21414921 + ... + 21416176.

Almost surely, 2^26897928916 is an apocalyptic number.

It is an amenable number.

26897928916 is a deficient number, since it is larger than the sum of its proper divisors (20473265472).

26897928916 is a wasteful number, since it uses less digits than its factorization.

26897928916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42831258 (or 42831256 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 67.

The spelling of 26897928916 in words is "twenty-six billion, eight hundred ninety-seven million, nine hundred twenty-eight thousand, nine hundred sixteen".