20700566072 has 16 divisors (see below), whose sum is σ = 39639382560. Its totient is φ = 10130064064.

The previous prime is 20700566011. The next prime is 20700566077. The reversal of 20700566072 is 27066500702.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20700566077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27526973 + ... + 27527724.

It is an arithmetic number, because the mean of its divisors is an integer number (2477461410).

Almost surely, 2^20700566072 is an apocalyptic number.

It is an amenable number.

20700566072 is a deficient number, since it is larger than the sum of its proper divisors (18938816488).

20700566072 is a wasteful number, since it uses less digits than its factorization.

20700566072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55054750 (or 55054746 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 20700566072 in words is "twenty billion, seven hundred million, five hundred sixty-six thousand, seventy-two".