20711440534 has 8 divisors (see below), whose sum is σ = 31253192208. Its totient is φ = 10293709800.

The previous prime is 20711440517. The next prime is 20711440537. The reversal of 20711440534 is 43504411702.

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

It is a junction number, because it is equal to n+sod(n) for n = 20711440496 and 20711440505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20711440537) 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 3 ways as a sum of consecutive naturals, for example, 31004817 + ... + 31005484.

It is an arithmetic number, because the mean of its divisors is an integer number (3906649026).

Almost surely, 2^20711440534 is an apocalyptic number.

20711440534 is a deficient number, since it is larger than the sum of its proper divisors (10541751674).

20711440534 is a wasteful number, since it uses less digits than its factorization.

20711440534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62010470.

The product of its (nonzero) digits is 13440, while the sum is 31.

The spelling of 20711440534 in words is "twenty billion, seven hundred eleven million, four hundred forty thousand, five hundred thirty-four".