26990244406 has 4 divisors (see below), whose sum is σ = 40485366612. Its totient is φ = 13495122202.

The previous prime is 26990244383. The next prime is 26990244419. The reversal of 26990244406 is 60444209962.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×26990244406² (a number of 22 digits) contains 22 as substring.

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, 6747561100 + ... + 6747561103.

It is an arithmetic number, because the mean of its divisors is an integer number (10121341653).

Almost surely, 2^26990244406 is an apocalyptic number.

26990244406 is a deficient number, since it is larger than the sum of its proper divisors (13495122206).

26990244406 is a wasteful number, since it uses less digits than its factorization.

26990244406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13495122205.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 26990244406 in words is "twenty-six billion, nine hundred ninety million, two hundred forty-four thousand, four hundred six".