20629994112 has 384 divisors, whose sum is σ = 76284331200. Its totient is φ = 5440296960.

The previous prime is 20629994093. The next prime is 20629994117. The reversal of 20629994112 is 21149992602.

20629994112 is a `hidden beast` number, since 2 + 0 + 629 + 9 + 9 + 4 + 1 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×20629994112² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20629994117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2196787 + ... + 2206157.

Almost surely, 2^20629994112 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 20629994112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38142165600).

20629994112 is an abundant number, since it is smaller than the sum of its proper divisors (55654337088).

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

20629994112 is a wasteful number, since it uses less digits than its factorization.

20629994112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9421 (or 9396 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 20629994112 in words is "twenty billion, six hundred twenty-nine million, nine hundred ninety-four thousand, one hundred twelve".