20541530624 has 40 divisors (see below), whose sum is σ = 41738645520. Its totient is φ = 10096669696.

The previous prime is 20541530579. The next prime is 20541530701. The reversal of 20541530624 is 42603514502.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309794 + ... + 370209.

It is an arithmetic number, because the mean of its divisors is an integer number (1043466138).

Almost surely, 2^20541530624 is an apocalyptic number.

It is an amenable number.

20541530624 is an abundant number, since it is smaller than the sum of its proper divisors (21197114896).

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

20541530624 is an frugal number, since it uses more digits than its factorization.

20541530624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680080 (or 680064 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 20541530624 in words is "twenty billion, five hundred forty-one million, five hundred thirty thousand, six hundred twenty-four".