20220540500 has 48 divisors (see below), whose sum is σ = 45586265088. Its totient is φ = 7827300000.

The previous prime is 20220540499. The next prime is 20220540533. The reversal of 20220540500 is 504502202.

It is a super-2 number, since 2×20220540500² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636776 + ... + 667775.

It is an arithmetic number, because the mean of its divisors is an integer number (949713856).

Almost surely, 2^20220540500 is an apocalyptic number.

20220540500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220540500 is an abundant number, since it is smaller than the sum of its proper divisors (25365724588).

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

20220540500 is a wasteful number, since it uses less digits than its factorization.

20220540500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304601 (or 1304589 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The spelling of 20220540500 in words is "twenty billion, two hundred twenty million, five hundred forty thousand, five hundred".