538543511117220 has 48 divisors (see below), whose sum is σ = 1723339235576448. Its totient is φ = 123095659683840.

The previous prime is 538543511117177. The next prime is 538543511117233. The reversal of 538543511117220 is 22711115345835.

It is a super-2 number, since 2×538543511117220² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 538543511117220.

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, 641123227101 + ... + 641123227940.

It is an arithmetic number, because the mean of its divisors is an integer number (35902900741176).

Almost surely, 2^{538543511117220} is an apocalyptic number.

It is an amenable number.

538543511117220 is an abundant number, since it is smaller than the sum of its proper divisors (1184795724459228).

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

538543511117220 is a wasteful number, since it uses less digits than its factorization.

538543511117220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282246455060 (or 1282246455058 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 538543511117220 in words is "five hundred thirty-eight trillion, five hundred forty-three billion, five hundred eleven million, one hundred seventeen thousand, two hundred twenty".