20071796556 has 192 divisors, whose sum is σ = 56077056000. Its totient is φ = 5468829696.

The previous prime is 20071796543. The next prime is 20071796557. The reversal of 20071796556 is 65569717002.

It is a super-2 number, since 2×20071796556² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20071796557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41214945 + ... + 41215431.

It is an arithmetic number, because the mean of its divisors is an integer number (292068000).

Almost surely, 2^20071796556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20071796556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28038528000).

20071796556 is an abundant number, since it is smaller than the sum of its proper divisors (36005259444).

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

20071796556 is a wasteful number, since it uses less digits than its factorization.

20071796556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 48.

The spelling of 20071796556 in words is "twenty billion, seventy-one million, seven hundred ninety-six thousand, five hundred fifty-six".