51111045524 has 96 divisors (see below), whose sum is σ = 115542884352. Its totient is φ = 19198944000.

The previous prime is 51111045523. The next prime is 51111045593. The reversal of 51111045524 is 42554011115.

It is a super-2 number, since 2×51111045524² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51111045523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2577632 + ... + 2597384.

It is an arithmetic number, because the mean of its divisors is an integer number (1203571712).

Almost surely, 2^51111045524 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51111045524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57771442176).

51111045524 is an abundant number, since it is smaller than the sum of its proper divisors (64431838828).

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

51111045524 is a wasteful number, since it uses less digits than its factorization.

51111045524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20077 (or 20075 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 51111045524 its reverse (42554011115), we get a palindrome (93665056639).

The spelling of 51111045524 in words is "fifty-one billion, one hundred eleven million, forty-five thousand, five hundred twenty-four".