20829916735 has 4 divisors (see below), whose sum is σ = 24995900088. Its totient is φ = 16663933384.

The previous prime is 20829916711. The next prime is 20829916781. The reversal of 20829916735 is 53761992802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20829916735 - 2²¹ = 20827819583 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 2082991669 + ... + 2082991678.

It is an arithmetic number, because the mean of its divisors is an integer number (6248975022).

Almost surely, 2^20829916735 is an apocalyptic number.

20829916735 is a deficient number, since it is larger than the sum of its proper divisors (4165983353).

20829916735 is an equidigital number, since it uses as much as digits as its factorization.

20829916735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165983352.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 20829916735 in words is "twenty billion, eight hundred twenty-nine million, nine hundred sixteen thousand, seven hundred thirty-five".