20126666224 has 160 divisors (see below), whose sum is σ = 46872714240. Its totient is φ = 8192710656.

The previous prime is 20126666221. The next prime is 20126666239. The reversal of 20126666224 is 42266662102.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126666221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64302292 + ... + 64302604.

It is an arithmetic number, because the mean of its divisors is an integer number (292954464).

Almost surely, 2^20126666224 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 20126666224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23436357120).

20126666224 is an abundant number, since it is smaller than the sum of its proper divisors (26746048016).

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

20126666224 is a wasteful number, since it uses less digits than its factorization.

20126666224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 20126666224 in words is "twenty billion, one hundred twenty-six million, six hundred sixty-six thousand, two hundred twenty-four".