20323551463 has 4 divisors (see below), whose sum is σ = 20626888120. Its totient is φ = 20020214808.

The previous prime is 20323551461. The next prime is 20323551481. The reversal of 20323551463 is 36415532302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20323551463 - 2¹ = 20323551461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323551461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151668228 + ... + 151668361.

It is an arithmetic number, because the mean of its divisors is an integer number (5156722030).

Almost surely, 2^20323551463 is an apocalyptic number.

20323551463 is a deficient number, since it is larger than the sum of its proper divisors (303336657).

20323551463 is an equidigital number, since it uses as much as digits as its factorization.

20323551463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303336656.

The product of its (nonzero) digits is 64800, while the sum is 34.

The spelling of 20323551463 in words is "twenty billion, three hundred twenty-three million, five hundred fifty-one thousand, four hundred sixty-three".