20712205723 has 8 divisors (see below), whose sum is σ = 22597804800. Its totient is φ = 18827051880.

The previous prime is 20712205721. The next prime is 20712205747. The reversal of 20712205723 is 32750221702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20712205723 - 2¹ = 20712205721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20712205721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10023 + ... + 203776.

It is an arithmetic number, because the mean of its divisors is an integer number (2824725600).

Almost surely, 2^20712205723 is an apocalyptic number.

20712205723 is a deficient number, since it is larger than the sum of its proper divisors (1885599077).

20712205723 is a wasteful number, since it uses less digits than its factorization.

20712205723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222617.

The product of its (nonzero) digits is 11760, while the sum is 31.

The spelling of 20712205723 in words is "twenty billion, seven hundred twelve million, two hundred five thousand, seven hundred twenty-three".