20268818724 has 192 divisors, whose sum is σ = 61906747392. Its totient is φ = 5004700800.

The previous prime is 20268818693. The next prime is 20268818741. The reversal of 20268818724 is 42781886202.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3546229 + ... + 3551939.

It is an arithmetic number, because the mean of its divisors is an integer number (322430976).

Almost surely, 2^20268818724 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 20268818724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30953373696).

20268818724 is an abundant number, since it is smaller than the sum of its proper divisors (41637928668).

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

20268818724 is a wasteful number, since it uses less digits than its factorization.

20268818724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5926 (or 5924 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 20268818724 in words is "twenty billion, two hundred sixty-eight million, eight hundred eighteen thousand, seven hundred twenty-four".