20643126000 has 160 divisors (see below), whose sum is σ = 76061227008. Its totient is φ = 4718419200.

The previous prime is 20643125989. The next prime is 20643126001. The reversal of 20643126000 is 62134602.

It is a super-2 number, since 2×20643126000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20643126001) 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, 203752 + ... + 287751.

Almost surely, 2^20643126000 is an apocalyptic number.

20643126000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20643126000 is an abundant number, since it is smaller than the sum of its proper divisors (55418101008).

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

20643126000 is a wasteful number, since it uses less digits than its factorization.

20643126000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491536 (or 491520 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 20643126000 in words is "twenty billion, six hundred forty-three million, one hundred twenty-six thousand".