20551034532 has 36 divisors (see below), whose sum is σ = 55781381040. Its totient is φ = 5871723984.

The previous prime is 20551034519. The next prime is 20551034551. The reversal of 20551034532 is 23543015502.

It is a self number, because there is not a number n which added to its sum of digits gives 20551034532.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17474782 + ... + 17475957.

Almost surely, 2^20551034532 is an apocalyptic number.

It is an amenable number.

20551034532 is an abundant number, since it is smaller than the sum of its proper divisors (35230346508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20551034532 is a wasteful number, since it uses less digits than its factorization.

20551034532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34950760 (or 34950751 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

It can be divided in two parts, 205510 and 34532, that added together give a palindrome (240042).

The spelling of 20551034532 in words is "twenty billion, five hundred fifty-one million, thirty-four thousand, five hundred thirty-two".