20535018500004 has 48 divisors (see below), whose sum is σ = 48193925934336. Its totient is φ = 6805188000000.

The previous prime is 20535018499913. The next prime is 20535018500023. The reversal of 20535018500004 is 40000581053502.

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, 6012504 + ... + 8787504.

It is an arithmetic number, because the mean of its divisors is an integer number (1004040123632).

Almost surely, 2^{20535018500004} is an apocalyptic number.

It is an amenable number.

20535018500004 is an abundant number, since it is smaller than the sum of its proper divisors (27658907434332).

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

20535018500004 is a wasteful number, since it uses less digits than its factorization.

20535018500004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778596 (or 2778594 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 20535018500004 its reverse (40000581053502), we get a palindrome (60535599553506).

The spelling of 20535018500004 in words is "twenty trillion, five hundred thirty-five billion, eighteen million, five hundred thousand, four".