20853554534 has 16 divisors (see below), whose sum is σ = 32174423376. Its totient is φ = 10129600800.

The previous prime is 20853554483. The next prime is 20853554549. The reversal of 20853554534 is 43545535802.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 164252 + ... + 262079.

It is an arithmetic number, because the mean of its divisors is an integer number (2010901461).

Almost surely, 2^20853554534 is an apocalyptic number.

20853554534 is a deficient number, since it is larger than the sum of its proper divisors (11320868842).

20853554534 is a wasteful number, since it uses less digits than its factorization.

20853554534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427031.

The product of its (nonzero) digits is 1440000, while the sum is 44.

The spelling of 20853554534 in words is "twenty billion, eight hundred fifty-three million, five hundred fifty-four thousand, five hundred thirty-four".