20196059520 has 640 divisors, whose sum is σ = 81116511840. Its totient is φ = 4248502272.

The previous prime is 20196059491. The next prime is 20196059549. The reversal of 20196059520 is 2595069102.

It is an interprime number because it is at equal distance from previous prime (20196059491) and next prime (20196059549).

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 59928792 + ... + 59929128.

Almost surely, 2^20196059520 is an apocalyptic number.

20196059520 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 20196059520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40558255920).

20196059520 is an abundant number, since it is smaller than the sum of its proper divisors (60920452320).

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

20196059520 is an equidigital number, since it uses as much as digits as its factorization.

20196059520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 39.

The spelling of 20196059520 in words is "twenty billion, one hundred ninety-six million, fifty-nine thousand, five hundred twenty".