51550442124 has 24 divisors (see below), whose sum is σ = 121387894320. Its totient is φ = 17025833664.

The previous prime is 51550442123. The next prime is 51550442267. The reversal of 51550442124 is 42124405515.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51550442123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19704519 + ... + 19707134.

It is an arithmetic number, because the mean of its divisors is an integer number (5057828930).

Almost surely, 2^51550442124 is an apocalyptic number.

It is an amenable number.

51550442124 is an abundant number, since it is smaller than the sum of its proper divisors (69837452196).

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

51550442124 is a wasteful number, since it uses less digits than its factorization.

51550442124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39411769 (or 39411767 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 51550442124 its reverse (42124405515), we get a palindrome (93674847639).

The spelling of 51550442124 in words is "fifty-one billion, five hundred fifty million, four hundred forty-two thousand, one hundred twenty-four".