20345020052550 has 48 divisors (see below), whose sum is σ = 50651975311632. Its totient is φ = 5404228403200.

The previous prime is 20345020052509. The next prime is 20345020052573. The reversal of 20345020052550 is 5525002054302.

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 23 ways as a sum of consecutive naturals, for example, 263839791 + ... + 263916890.

It is an arithmetic number, because the mean of its divisors is an integer number (1055249485659).

Almost surely, 2^{20345020052550} is an apocalyptic number.

20345020052550 is an abundant number, since it is smaller than the sum of its proper divisors (30306955259082).

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

20345020052550 is a wasteful number, since it uses less digits than its factorization.

20345020052550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527756953 (or 527756948 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 33.

The spelling of 20345020052550 in words is "twenty trillion, three hundred forty-five billion, twenty million, fifty-two thousand, five hundred fifty".