126323665020 has 360 divisors, whose sum is σ = 465093622224. Its totient is φ = 28616426496.

The previous prime is 126323665007. The next prime is 126323665067. The reversal of 126323665020 is 20566323621.

126323665020 is a `hidden beast` number, since 12 + 63 + 23 + 66 + 502 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 8962899 + ... + 8976981.

Almost surely, 2^126323665020 is an apocalyptic number.

126323665020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126323665020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232546811112).

126323665020 is an abundant number, since it is smaller than the sum of its proper divisors (338769957204).

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

126323665020 is a wasteful number, since it uses less digits than its factorization.

126323665020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14231 (or 14213 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 126323665020 its reverse (20566323621), we get a palindrome (146889988641).

The spelling of 126323665020 in words is "one hundred twenty-six billion, three hundred twenty-three million, six hundred sixty-five thousand, twenty".