20502534530 has 8 divisors (see below), whose sum is σ = 36904562172. Its totient is φ = 8201013808.

The previous prime is 20502534509. The next prime is 20502534551. The reversal of 20502534530 is 3543520502.

It is an interprime number because it is at equal distance from previous prime (20502534509) and next prime (20502534551).

It can be written as a sum of positive squares in 2 ways, for example, as 17444333929 + 3058200601 = 132077^2 + 55301^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20502534493 and 20502534502.

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, 1025126717 + ... + 1025126736.

Almost surely, 2^20502534530 is an apocalyptic number.

20502534530 is a deficient number, since it is larger than the sum of its proper divisors (16402027642).

20502534530 is a wasteful number, since it uses less digits than its factorization.

20502534530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050253460.

The product of its (nonzero) digits is 18000, while the sum is 29.

The spelling of 20502534530 in words is "twenty billion, five hundred two million, five hundred thirty-four thousand, five hundred thirty".