5621396538240 has 768 divisors, whose sum is σ = 22892325805440. Its totient is φ = 1244351692800.

The previous prime is 5621396538239. The next prime is 5621396538283. The reversal of 5621396538240 is 428356931265.

It is a happy number.

5621396538240 is a `hidden beast` number, since 5 + 6 + 2 + 1 + 396 + 5 + 3 + 8 + 240 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 226465030 + ... + 226489850.

Almost surely, 2^{5621396538240} 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 5621396538240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11446162902720).

5621396538240 is an abundant number, since it is smaller than the sum of its proper divisors (17270929267200).

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

5621396538240 is a wasteful number, since it uses less digits than its factorization.

5621396538240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25031 (or 25016 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 5621396538240 in words is "five trillion, six hundred twenty-one billion, three hundred ninety-six million, five hundred thirty-eight thousand, two hundred forty".