51111100605060 has 72 divisors (see below), whose sum is σ = 155043801745560. Its totient is φ = 13629029326848.

The previous prime is 51111100605023. The next prime is 51111100605107. The reversal of 51111100605060 is 6050600111115.

51111100605060 is a `hidden beast` number, since 51 + 1 + 1 + 1 + 1 + 0 + 0 + 605 + 0 + 6 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9107635908996 + 42003464696064 = 3017886^2 + 6481008^2 .

It is a super-2 number, since 2×51111100605060² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2099005 + ... + 10326084.

It is an arithmetic number, because the mean of its divisors is an integer number (2153386135355).

Almost surely, 2^{51111100605060} is an apocalyptic number.

It is an amenable number.

51111100605060 is an abundant number, since it is smaller than the sum of its proper divisors (103932701140500).

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

51111100605060 is a wasteful number, since it uses less digits than its factorization.

51111100605060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12447957 (or 12447952 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

Adding to 51111100605060 its reverse (6050600111115), we get a palindrome (57161700716175).

The spelling of 51111100605060 in words is "fifty-one trillion, one hundred eleven billion, one hundred million, six hundred five thousand, sixty".