20226681478 has 8 divisors (see below), whose sum is σ = 30353800968. Its totient is φ = 10108747824.

The previous prime is 20226681421. The next prime is 20226681509. The reversal of 20226681478 is 87418662202.

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

It is a super-2 number, since 2×20226681478² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2290951 + ... + 2299762.

It is an arithmetic number, because the mean of its divisors is an integer number (3794225121).

Almost surely, 2^20226681478 is an apocalyptic number.

20226681478 is a deficient number, since it is larger than the sum of its proper divisors (10127119490).

20226681478 is a wasteful number, since it uses less digits than its factorization.

20226681478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592918.

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 20226681478 in words is "twenty billion, two hundred twenty-six million, six hundred eighty-one thousand, four hundred seventy-eight".