20429301568 has 112 divisors (see below), whose sum is σ = 46167690240. Its totient is φ = 8901734400.

The previous prime is 20429301551. The next prime is 20429301587. The reversal of 20429301568 is 86510392402.

It is a self number, because there is not a number n which added to its sum of digits gives 20429301568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1047813 + ... + 1067131.

It is an arithmetic number, because the mean of its divisors is an integer number (412211520).

Almost surely, 2^20429301568 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 20429301568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23083845120).

20429301568 is an abundant number, since it is smaller than the sum of its proper divisors (25738388672).

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

20429301568 is a wasteful number, since it uses less digits than its factorization.

20429301568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19416 (or 19406 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 20429301568 in words is "twenty billion, four hundred twenty-nine million, three hundred one thousand, five hundred sixty-eight".