51310241321440 has 48 divisors (see below), whose sum is σ = 124039525257648. Its totient is φ = 20046791955456.

The previous prime is 51310241321429. The next prime is 51310241321441. The reversal of 51310241321440 is 4412314201315.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51310241321441) 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, 3728935077 + ... + 3728948836.

It is an arithmetic number, because the mean of its divisors is an integer number (2584156776201).

Almost surely, 2^{51310241321440} is an apocalyptic number.

It is an amenable number.

51310241321440 is an abundant number, since it is smaller than the sum of its proper divisors (72729283936208).

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

51310241321440 is a wasteful number, since it uses less digits than its factorization.

51310241321440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7457883971 (or 7457883963 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 51310241321440 its reverse (4412314201315), we get a palindrome (55722555522755).

The spelling of 51310241321440 in words is "fifty-one trillion, three hundred ten billion, two hundred forty-one million, three hundred twenty-one thousand, four hundred forty".