20533220520 has 64 divisors (see below), whose sum is σ = 61609083840. Its totient is φ = 5474688000.

The previous prime is 20533220507. The next prime is 20533220557. The reversal of 20533220520 is 2502233502.

It is a super-2 number, since 2×20533220520² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1519795 + ... + 1533245.

It is an arithmetic number, because the mean of its divisors is an integer number (962641935).

Almost surely, 2^20533220520 is an apocalyptic number.

20533220520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20533220520 is an abundant number, since it is smaller than the sum of its proper divisors (41075863320).

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

20533220520 is a wasteful number, since it uses less digits than its factorization.

20533220520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26186 (or 26182 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The spelling of 20533220520 in words is "twenty billion, five hundred thirty-three million, two hundred twenty thousand, five hundred twenty".