20476763421 has 8 divisors (see below), whose sum is σ = 27326974560. Its totient is φ = 13638863952.

The previous prime is 20476763389. The next prime is 20476763459. The reversal of 20476763421 is 12436767402.

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

It is not a de Polignac number, because 20476763421 - 2⁵ = 20476763389 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20476763471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3074035 + ... + 3080688.

It is an arithmetic number, because the mean of its divisors is an integer number (3415871820).

Almost surely, 2^20476763421 is an apocalyptic number.

It is an amenable number.

20476763421 is a deficient number, since it is larger than the sum of its proper divisors (6850211139).

20476763421 is a wasteful number, since it uses less digits than its factorization.

20476763421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155835.

The product of its (nonzero) digits is 338688, while the sum is 42.

The spelling of 20476763421 in words is "twenty billion, four hundred seventy-six million, seven hundred sixty-three thousand, four hundred twenty-one".