51401323603120 has 20 divisors (see below), whose sum is σ = 119508077377440. Its totient is φ = 20560529441216.

The previous prime is 51401323603103. The next prime is 51401323603129. The reversal of 51401323603120 is 2130632310415.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×51401323603120² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51401323603129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321258272440 + ... + 321258272599.

It is an arithmetic number, because the mean of its divisors is an integer number (5975403868872).

Almost surely, 2^{51401323603120} is an apocalyptic number.

It is an amenable number.

51401323603120 is an abundant number, since it is smaller than the sum of its proper divisors (68106753774320).

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

51401323603120 is a wasteful number, since it uses less digits than its factorization.

51401323603120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642516545052 (or 642516545046 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 51401323603120 its reverse (2130632310415), we get a palindrome (53531955913535).

The spelling of 51401323603120 in words is "fifty-one trillion, four hundred one billion, three hundred twenty-three million, six hundred three thousand, one hundred twenty".