20950718976 has 240 divisors, whose sum is σ = 67750851168. Its totient is φ = 6176563200.

The previous prime is 20950718959. The next prime is 20950719001. The reversal of 20950718976 is 67981705902.

It is a super-2 number, since 2×20950718976² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1869871 + ... + 1881041.

Almost surely, 2^20950718976 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 20950718976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33875425584).

20950718976 is an abundant number, since it is smaller than the sum of its proper divisors (46800132192).

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

20950718976 is a wasteful number, since it uses less digits than its factorization.

20950718976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11243 (or 11224 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 54.

The spelling of 20950718976 in words is "twenty billion, nine hundred fifty million, seven hundred eighteen thousand, nine hundred seventy-six".