52111521111 has 8 divisors (see below), whose sum is σ = 74826799600. Its totient is φ = 32068628352.

The previous prime is 52111521109. The next prime is 52111521131. The reversal of 52111521111 is 11112511125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52111521111 - 2¹ = 52111521109 is a prime.

It is a super-2 number, since 2×52111521111² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52111521131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668096386 + ... + 668096463.

It is an arithmetic number, because the mean of its divisors is an integer number (9353349950).

Almost surely, 2^52111521111 is an apocalyptic number.

52111521111 is a deficient number, since it is larger than the sum of its proper divisors (22715278489).

52111521111 is a wasteful number, since it uses less digits than its factorization.

52111521111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336192865.

The product of its digits is 100, while the sum is 21.

The spelling of 52111521111 in words is "fifty-two billion, one hundred eleven million, five hundred twenty-one thousand, one hundred eleven".