51100112840 has 64 divisors (see below), whose sum is σ = 131528482560. Its totient is φ = 17502946560.

The previous prime is 51100112771. The next prime is 51100112867. The reversal of 51100112840 is 4821100115.

It is a super-2 number, since 2×51100112840² (a number of 22 digits) contains 22 as substring.

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, 200174 + ... + 377186.

It is an arithmetic number, because the mean of its divisors is an integer number (2055132540).

Almost surely, 2^51100112840 is an apocalyptic number.

It is an amenable number.

51100112840 is an abundant number, since it is smaller than the sum of its proper divisors (80428369720).

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

51100112840 is a wasteful number, since it uses less digits than its factorization.

51100112840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178062 (or 178058 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 23.

Adding to 51100112840 its reverse (4821100115), we get a palindrome (55921212955).

The spelling of 51100112840 in words is "fifty-one billion, one hundred million, one hundred twelve thousand, eight hundred forty".