20681467735 has 8 divisors (see below), whose sum is σ = 24822353520. Its totient is φ = 16542112704.

The previous prime is 20681467693. The next prime is 20681467771. The reversal of 20681467735 is 53776418602.

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 20681467735 - 2⁹ = 20681467223 is a prime.

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, 352750 + ... + 407179.

It is an arithmetic number, because the mean of its divisors is an integer number (3102794190).

Almost surely, 2^20681467735 is an apocalyptic number.

20681467735 is a deficient number, since it is larger than the sum of its proper divisors (4140885785).

20681467735 is an equidigital number, since it uses as much as digits as its factorization.

20681467735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765377.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 20681467735 in words is "twenty billion, six hundred eighty-one million, four hundred sixty-seven thousand, seven hundred thirty-five".