20379163520 has 64 divisors (see below), whose sum is σ = 48848065200. Its totient is φ = 8130060288.

The previous prime is 20379163513. The next prime is 20379163531. The reversal of 20379163520 is 2536197302.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 200552 + ... + 284568.

Almost surely, 2^20379163520 is an apocalyptic number.

20379163520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20379163520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24424032600).

20379163520 is an abundant number, since it is smaller than the sum of its proper divisors (28468901680).

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

20379163520 is an equidigital number, since it uses as much as digits as its factorization.

20379163520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84415 (or 84403 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 20379163520 in words is "twenty billion, three hundred seventy-nine million, one hundred sixty-three thousand, five hundred twenty".