20346116520 has 64 divisors (see below), whose sum is σ = 61291707840. Its totient is φ = 5403110400.

The previous prime is 20346116513. The next prime is 20346116533. The reversal of 20346116520 is 2561164302.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 322846 + ... + 380685.

It is an arithmetic number, because the mean of its divisors is an integer number (957682935).

Almost surely, 2^20346116520 is an apocalyptic number.

20346116520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20346116520 is an abundant number, since it is smaller than the sum of its proper divisors (40945591320).

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

20346116520 is a wasteful number, since it uses less digits than its factorization.

20346116520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703786 (or 703782 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 20346116520 in words is "twenty billion, three hundred forty-six million, one hundred sixteen thousand, five hundred twenty".