5321451431240 has 128 divisors (see below), whose sum is σ = 13757865292800. Its totient is φ = 1814632028160.

The previous prime is 5321451431227. The next prime is 5321451431273. The reversal of 5321451431240 is 421341541235.

It is a super-3 number, since 3×5321451431240³ (a number of 39 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 5321451431240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54892892 + ... + 54989748.

It is an arithmetic number, because the mean of its divisors is an integer number (107483322600).

Almost surely, 2^{5321451431240} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5321451431240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6878932646400).

5321451431240 is an abundant number, since it is smaller than the sum of its proper divisors (8436413861560).

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

5321451431240 is a wasteful number, since it uses less digits than its factorization.

5321451431240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97935 (or 97931 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 5321451431240 its reverse (421341541235), we get a palindrome (5742792972475).

The spelling of 5321451431240 in words is "five trillion, three hundred twenty-one billion, four hundred fifty-one million, four hundred thirty-one thousand, two hundred forty".