51304440452240 has 80 divisors (see below), whose sum is σ = 119772807710400. Its totient is φ = 20437537261056.

The previous prime is 51304440452197. The next prime is 51304440452329. The reversal of 51304440452240 is 4225404440315.

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

It is a super-2 number, since 2×51304440452240² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51304440452194 and 51304440452203.

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, 55037879 + ... + 55962281.

It is an arithmetic number, because the mean of its divisors is an integer number (1497160096380).

Almost surely, 2^{51304440452240} is an apocalyptic number.

It is an amenable number.

51304440452240 is an abundant number, since it is smaller than the sum of its proper divisors (68468367258160).

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

51304440452240 is a wasteful number, since it uses less digits than its factorization.

51304440452240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927264 (or 927258 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 38.

Adding to 51304440452240 its reverse (4225404440315), we get a palindrome (55529844892555).

The spelling of 51304440452240 in words is "fifty-one trillion, three hundred four billion, four hundred forty million, four hundred fifty-two thousand, two hundred forty".