20534205506 has 8 divisors (see below), whose sum is σ = 31794898944. Its totient is φ = 9935905860.

The previous prime is 20534205473. The next prime is 20534205547. The reversal of 20534205506 is 60550243502.

20534205506 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165598370 + ... + 165598493.

It is an arithmetic number, because the mean of its divisors is an integer number (3974362368).

Almost surely, 2^20534205506 is an apocalyptic number.

20534205506 is a deficient number, since it is larger than the sum of its proper divisors (11260693438).

20534205506 is a wasteful number, since it uses less digits than its factorization.

20534205506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331196896.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 20534205506 in words is "twenty billion, five hundred thirty-four million, two hundred five thousand, five hundred six".