20727723126 has 16 divisors (see below), whose sum is σ = 45224123328. Its totient is φ = 6281128200.

The previous prime is 20727723013. The next prime is 20727723131. The reversal of 20727723126 is 62132772702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157028140 + ... + 157028271.

It is an arithmetic number, because the mean of its divisors is an integer number (2826507708).

Almost surely, 2^20727723126 is an apocalyptic number.

20727723126 is an abundant number, since it is smaller than the sum of its proper divisors (24496400202).

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

20727723126 is a wasteful number, since it uses less digits than its factorization.

20727723126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314056427.

The product of its (nonzero) digits is 98784, while the sum is 39.

The spelling of 20727723126 in words is "twenty billion, seven hundred twenty-seven million, seven hundred twenty-three thousand, one hundred twenty-six".