20734247435 has 8 divisors (see below), whose sum is σ = 27143014896. Its totient is φ = 15079452640.

The previous prime is 20734247381. The next prime is 20734247441. The reversal of 20734247435 is 53474243702.

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

It is not a de Polignac number, because 20734247435 - 2⁸ = 20734247179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20734247392 and 20734247401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188493104 + ... + 188493213.

It is an arithmetic number, because the mean of its divisors is an integer number (3392876862).

Almost surely, 2^20734247435 is an apocalyptic number.

20734247435 is a deficient number, since it is larger than the sum of its proper divisors (6408767461).

20734247435 is a wasteful number, since it uses less digits than its factorization.

20734247435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376986333.

The product of its (nonzero) digits is 564480, while the sum is 41.

The spelling of 20734247435 in words is "twenty billion, seven hundred thirty-four million, two hundred forty-seven thousand, four hundred thirty-five".