20530533310 has 64 divisors (see below), whose sum is σ = 44775078912. Its totient is φ = 6616613376.

The previous prime is 20530533281. The next prime is 20530533337. The reversal of 20530533310 is 1333503502.

It is a happy number.

It is a super-2 number, since 2×20530533310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 968889 + ... + 989851.

It is an arithmetic number, because the mean of its divisors is an integer number (699610608).

Almost surely, 2^20530533310 is an apocalyptic number.

20530533310 is an abundant number, since it is smaller than the sum of its proper divisors (24244545602).

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

20530533310 is a wasteful number, since it uses less digits than its factorization.

20530533310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21817.

The product of its (nonzero) digits is 4050, while the sum is 25.

The spelling of 20530533310 in words is "twenty billion, five hundred thirty million, five hundred thirty-three thousand, three hundred ten".