20551674227 has 12 divisors (see below), whose sum is σ = 24490150776. Its totient is φ = 17186067360.

The previous prime is 20551674211. The next prime is 20551674251. The reversal of 20551674227 is 72247615502.

It is not a de Polignac number, because 20551674227 - 2⁴ = 20551674211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (20551674257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5112893 + ... + 5116910.

It is an arithmetic number, because the mean of its divisors is an integer number (2040845898).

Almost surely, 2^20551674227 is an apocalyptic number.

20551674227 is a deficient number, since it is larger than the sum of its proper divisors (3938476549).

20551674227 is a wasteful number, since it uses less digits than its factorization.

20551674227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10229858 (or 10229851 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 20551674227 in words is "twenty billion, five hundred fifty-one million, six hundred seventy-four thousand, two hundred twenty-seven".