28626106477 has 4 divisors (see below), whose sum is σ = 30132743680. Its totient is φ = 27119469276.

The previous prime is 28626106469. The next prime is 28626106493. The reversal of 28626106477 is 77460162682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28626106477 - 2³ = 28626106469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28626106477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28626106427) 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, 753318573 + ... + 753318610.

It is an arithmetic number, because the mean of its divisors is an integer number (7533185920).

Almost surely, 2^28626106477 is an apocalyptic number.

It is an amenable number.

28626106477 is a deficient number, since it is larger than the sum of its proper divisors (1506637203).

28626106477 is a wasteful number, since it uses less digits than its factorization.

28626106477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506637202.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 28626106477 in words is "twenty-eight billion, six hundred twenty-six million, one hundred six thousand, four hundred seventy-seven".