28126555706 has 4 divisors (see below), whose sum is σ = 42189833562. Its totient is φ = 14063277852.

The previous prime is 28126555679. The next prime is 28126555711. The reversal of 28126555706 is 60755562182.

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

It can be written as a sum of positive squares in only one way, i.e., 22869000625 + 5257555081 = 151225^2 + 72509^2 .

It is a super-2 number, since 2×28126555706² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7031638925 + ... + 7031638928.

Almost surely, 2^28126555706 is an apocalyptic number.

28126555706 is a deficient number, since it is larger than the sum of its proper divisors (14063277856).

28126555706 is a wasteful number, since it uses less digits than its factorization.

28126555706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14063277855.

The product of its (nonzero) digits is 1008000, while the sum is 47.

The spelling of 28126555706 in words is "twenty-eight billion, one hundred twenty-six million, five hundred fifty-five thousand, seven hundred six".