20284080664628 has 48 divisors (see below), whose sum is σ = 40807890426240. Its totient is φ = 8731846992000.

The previous prime is 20284080664597. The next prime is 20284080664649. The reversal of 20284080664628 is 82646608048202.

It is a super-2 number, since 2×20284080664628² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99123323 + ... + 99327746.

It is an arithmetic number, because the mean of its divisors is an integer number (850164383880).

Almost surely, 2^{20284080664628} is an apocalyptic number.

It is an amenable number.

20284080664628 is an abundant number, since it is smaller than the sum of its proper divisors (20523809761612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20284080664628 is a wasteful number, since it uses less digits than its factorization.

20284080664628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198451208 (or 198451206 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 56.

The spelling of 20284080664628 in words is "twenty trillion, two hundred eighty-four billion, eighty million, six hundred sixty-four thousand, six hundred twenty-eight".