20323616456 has 64 divisors (see below), whose sum is σ = 47125108800. Its totient is φ = 8078572800.

The previous prime is 20323616389. The next prime is 20323616507. The reversal of 20323616456 is 65461632302.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 15 ways as a sum of consecutive naturals, for example, 445775 + ... + 489246.

It is an arithmetic number, because the mean of its divisors is an integer number (736329825).

Almost surely, 2^20323616456 is an apocalyptic number.

20323616456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20323616456 is an abundant number, since it is smaller than the sum of its proper divisors (26801492344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20323616456 is a wasteful number, since it uses less digits than its factorization.

20323616456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935070 (or 935066 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 20323616456 in words is "twenty billion, three hundred twenty-three million, six hundred sixteen thousand, four hundred fifty-six".