521116611125 has 32 divisors (see below), whose sum is σ = 709969598208. Its totient is φ = 378730536000.

The previous prime is 521116611073. The next prime is 521116611131.

521116611125 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 521116611125 - 2⁶ = 521116611061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 521116611091 and 521116611100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1858667 + ... + 2120583.

It is an arithmetic number, because the mean of its divisors is an integer number (22186549944).

Almost surely, 2^521116611125 is an apocalyptic number.

521116611125 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

521116611125 is a deficient number, since it is larger than the sum of its proper divisors (188852987083).

521116611125 is a wasteful number, since it uses less digits than its factorization.

521116611125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263390 (or 263380 counting only the distinct ones).

The product of its digits is 3600, while the sum is 32.

The spelling of 521116611125 in words is "five hundred twenty-one billion, one hundred sixteen million, six hundred eleven thousand, one hundred twenty-five".