20628628886 has 8 divisors (see below), whose sum is σ = 32763116520. Its totient is φ = 9707590048.

The previous prime is 20628628879. The next prime is 20628628919. The reversal of 20628628886 is 68882682602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303362156 + ... + 303362223.

It is an arithmetic number, because the mean of its divisors is an integer number (4095389565).

Almost surely, 2^20628628886 is an apocalyptic number.

20628628886 is a deficient number, since it is larger than the sum of its proper divisors (12134487634).

20628628886 is a wasteful number, since it uses less digits than its factorization.

20628628886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606724398.

The product of its (nonzero) digits is 7077888, while the sum is 56.

The spelling of 20628628886 in words is "twenty billion, six hundred twenty-eight million, six hundred twenty-eight thousand, eight hundred eighty-six".