5721907256440 has 32 divisors (see below), whose sum is σ = 12874429687680. Its totient is φ = 2288738305152.

The previous prime is 5721907256437. The next prime is 5721907256449. The reversal of 5721907256440 is 446527091275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721907256449) 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, 3260554 + ... + 4698406.

It is an arithmetic number, because the mean of its divisors is an integer number (402325927740).

Almost surely, 2^{5721907256440} is an apocalyptic number.

It is an amenable number.

5721907256440 is an abundant number, since it is smaller than the sum of its proper divisors (7152522431240).

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

5721907256440 is a wasteful number, since it uses less digits than its factorization.

5721907256440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537351 (or 1537347 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 5721907256440 in words is "five trillion, seven hundred twenty-one billion, nine hundred seven million, two hundred fifty-six thousand, four hundred forty".