20706264064 has 22 divisors (see below), whose sum is σ = 41392309214. Its totient is φ = 10353131520.

The previous prime is 20706264053. The next prime is 20706264077. The reversal of 20706264064 is 46046260702.

It can be written as a sum of positive squares in only one way, i.e., 10584294400 + 10121969664 = 102880^2 + 100608^2 .

It is a super-3 number, since 3×20706264064³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10109457 + ... + 10111504.

Almost surely, 2^20706264064 is an apocalyptic number.

It is an amenable number.

20706264064 is a deficient number, since it is larger than the sum of its proper divisors (20686045150).

20706264064 is an equidigital number, since it uses as much as digits as its factorization.

20706264064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20220981 (or 20220963 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The spelling of 20706264064 in words is "twenty billion, seven hundred six million, two hundred sixty-four thousand, sixty-four".