20770709306 has 8 divisors (see below), whose sum is σ = 31915968084. Its totient is φ = 10132053280.

The previous prime is 20770709269. The next prime is 20770709317. The reversal of 20770709306 is 60390707702.

It can be written as a sum of positive squares in 2 ways, for example, as 16186200625 + 4584508681 = 127225^2 + 67709^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126650585 + ... + 126650748.

Almost surely, 2^20770709306 is an apocalyptic number.

20770709306 is a deficient number, since it is larger than the sum of its proper divisors (11145258778).

20770709306 is a wasteful number, since it uses less digits than its factorization.

20770709306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253301376.

The product of its (nonzero) digits is 111132, while the sum is 41.

The spelling of 20770709306 in words is "twenty billion, seven hundred seventy million, seven hundred nine thousand, three hundred six".