20296163520 has 280 divisors, whose sum is σ = 74151798864. Its totient is φ = 5265782784.

The previous prime is 20296163479. The next prime is 20296163521. The reversal of 20296163520 is 2536169202.

20296163520 is a `hidden beast` number, since 2 + 0 + 2 + 9 + 616 + 35 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20296163521) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 948459 + ... + 969621.

Almost surely, 2^20296163520 is an apocalyptic number.

20296163520 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 20296163520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37075899432).

20296163520 is an abundant number, since it is smaller than the sum of its proper divisors (53855635344).

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

20296163520 is a wasteful number, since it uses less digits than its factorization.

20296163520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21229 (or 21210 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

It can be divided in two parts, 2029616 and 3520, that added together give a triangular number (2033136 = T₂₀₁₆).

The spelling of 20296163520 in words is "twenty billion, two hundred ninety-six million, one hundred sixty-three thousand, five hundred twenty".