5621667725056 has 144 divisors (see below), whose sum is σ = 12601302090048. Its totient is φ = 2488983552000.

The previous prime is 5621667725041. The next prime is 5621667725057. The reversal of 5621667725056 is 6505277661265.

It is a happy number.

It is a super-3 number, since 3×5621667725056³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621667725057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5645506 + ... + 6566206.

It is an arithmetic number, because the mean of its divisors is an integer number (87509042292).

Almost surely, 2^{5621667725056} 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 5621667725056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6300651045024).

5621667725056 is an abundant number, since it is smaller than the sum of its proper divisors (6979634364992).

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

5621667725056 is a wasteful number, since it uses less digits than its factorization.

5621667725056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920818 (or 920804 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 58.

The spelling of 5621667725056 in words is "five trillion, six hundred twenty-one billion, six hundred sixty-seven million, seven hundred twenty-five thousand, fifty-six".