20555210324 has 24 divisors (see below), whose sum is σ = 40594932000. Its totient is φ = 9021094880.

The previous prime is 20555210317. The next prime is 20555210341. The reversal of 20555210324 is 42301255502.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 8053274 + ... + 8055825.

It is an arithmetic number, because the mean of its divisors is an integer number (1691455500).

Almost surely, 2^20555210324 is an apocalyptic number.

It is an amenable number.

20555210324 is a deficient number, since it is larger than the sum of its proper divisors (20039721676).

20555210324 is a wasteful number, since it uses less digits than its factorization.

20555210324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16109143 (or 16109141 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 20555210324 its reverse (42301255502), we get a palindrome (62856465826).

The spelling of 20555210324 in words is "twenty billion, five hundred fifty-five million, two hundred ten thousand, three hundred twenty-four".