51270131440 has 80 divisors (see below), whose sum is σ = 130077674496. Its totient is φ = 18638240000.

The previous prime is 51270131431. The next prime is 51270131483. The reversal of 51270131440 is 4413107215.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 51270131399 and 51270131408.

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, 4174749 + ... + 4187011.

Almost surely, 2^51270131440 is an apocalyptic number.

It is an amenable number.

51270131440 is an abundant number, since it is smaller than the sum of its proper divisors (78807543056).

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

51270131440 is a wasteful number, since it uses less digits than its factorization.

51270131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17038 (or 17032 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 51270131440 its reverse (4413107215), we get a palindrome (55683238655).

It can be divided in two parts, 51270 and 131440, that added together give a triangular number (182710 = T₆₀₄).

The spelling of 51270131440 in words is "fifty-one billion, two hundred seventy million, one hundred thirty-one thousand, four hundred forty".