26276990906 has 4 divisors (see below), whose sum is σ = 39415486362. Its totient is φ = 13138495452.

The previous prime is 26276990903. The next prime is 26276990947. The reversal of 26276990906 is 60909967262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60909967262 = 2 ⋅30454983631.

It can be written as a sum of positive squares in only one way, i.e., 21572265625 + 4704725281 = 146875^2 + 68591^2 .

It is not an unprimeable number, because it can be changed into a prime (26276990903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6569247725 + ... + 6569247728.

Almost surely, 2^26276990906 is an apocalyptic number.

26276990906 is a deficient number, since it is larger than the sum of its proper divisors (13138495456).

26276990906 is a wasteful number, since it uses less digits than its factorization.

26276990906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13138495455.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The spelling of 26276990906 in words is "twenty-six billion, two hundred seventy-six million, nine hundred ninety thousand, nine hundred six".