20531827534 has 8 divisors (see below), whose sum is σ = 30798405648. Its totient is φ = 10265692320.

The previous prime is 20531827531. The next prime is 20531827541. The reversal of 20531827534 is 43572813502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20531827531) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 54454 + ... + 209830.

It is an arithmetic number, because the mean of its divisors is an integer number (3849800706).

Almost surely, 2^20531827534 is an apocalyptic number.

20531827534 is a deficient number, since it is larger than the sum of its proper divisors (10266578114).

20531827534 is a wasteful number, since it uses less digits than its factorization.

20531827534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221450.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 20531827534 in words is "twenty billion, five hundred thirty-one million, eight hundred twenty-seven thousand, five hundred thirty-four".