51544330140 has 48 divisors (see below), whose sum is σ = 152813781792. Its totient is φ = 12936615936.

The previous prime is 51544330129. The next prime is 51544330163. The reversal of 51544330140 is 4103344515.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 51544330098 and 51544330107.

It is a congruent number.

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, 25265809 + ... + 25267848.

It is an arithmetic number, because the mean of its divisors is an integer number (3183620454).

Almost surely, 2^51544330140 is an apocalyptic number.

It is an amenable number.

51544330140 is an abundant number, since it is smaller than the sum of its proper divisors (101269451652).

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

51544330140 is a wasteful number, since it uses less digits than its factorization.

51544330140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50533686 (or 50533684 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 51544330140 its reverse (4103344515), we get a palindrome (55647674655).

The spelling of 51544330140 in words is "fifty-one billion, five hundred forty-four million, three hundred thirty thousand, one hundred forty".