20755480220 has 24 divisors (see below), whose sum is σ = 44992526208. Its totient is φ = 8034379200.

The previous prime is 20755480201. The next prime is 20755480237. The reversal of 20755480220 is 2208455702.

It is a super-2 number, since 2×20755480220² (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 7 ways as a sum of consecutive naturals, for example, 16737671 + ... + 16738910.

It is an arithmetic number, because the mean of its divisors is an integer number (1874688592).

Almost surely, 2^20755480220 is an apocalyptic number.

20755480220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20755480220 is an abundant number, since it is smaller than the sum of its proper divisors (24237045988).

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

20755480220 is a wasteful number, since it uses less digits than its factorization.

20755480220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33476621 (or 33476619 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The spelling of 20755480220 in words is "twenty billion, seven hundred fifty-five million, four hundred eighty thousand, two hundred twenty".