20734265473 has 8 divisors (see below), whose sum is σ = 20799190656. Its totient is φ = 20669422800.

The previous prime is 20734265449. The next prime is 20734265479. The reversal of 20734265473 is 37456243702.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20734265473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20734265479) by changing a digit.

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, 503368 + ... + 542998.

It is an arithmetic number, because the mean of its divisors is an integer number (2599898832).

Almost surely, 2^20734265473 is an apocalyptic number.

It is an amenable number.

20734265473 is a deficient number, since it is larger than the sum of its proper divisors (64925183).

20734265473 is a wasteful number, since it uses less digits than its factorization.

20734265473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41255.

The product of its (nonzero) digits is 846720, while the sum is 43.

The spelling of 20734265473 in words is "twenty billion, seven hundred thirty-four million, two hundred sixty-five thousand, four hundred seventy-three".