20228654301891 has 16 divisors (see below), whose sum is σ = 32446964294400. Its totient is φ = 10950850448928.

The previous prime is 20228654301883. The next prime is 20228654302037. The reversal of 20228654301891 is 19810345682202.

It is not a de Polignac number, because 20228654301891 - 2³ = 20228654301883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20228654301091) 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 15 ways as a sum of consecutive naturals, for example, 25349190456 + ... + 25349191253.

It is an arithmetic number, because the mean of its divisors is an integer number (2027935268400).

Almost surely, 2^{20228654301891} is an apocalyptic number.

20228654301891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20228654301891 is a deficient number, since it is larger than the sum of its proper divisors (12218309992509).

20228654301891 is a wasteful number, since it uses less digits than its factorization.

20228654301891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50698381738.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 20228654301891 in words is "twenty trillion, two hundred twenty-eight billion, six hundred fifty-four million, three hundred one thousand, eight hundred ninety-one".