7557341666644 has 96 divisors (see below), whose sum is σ = 16626505303296. Its totient is φ = 2919915233280.

The previous prime is 7557341666639. The next prime is 7557341666647. The reversal of 7557341666644 is 4466661437557.

It is a super-2 number, since 2×7557341666644² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7557341666647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18643222 + ... + 19044274.

It is an arithmetic number, because the mean of its divisors is an integer number (173192763576).

Almost surely, 2^{7557341666644} 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 7557341666644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8313252651648).

7557341666644 is an abundant number, since it is smaller than the sum of its proper divisors (9069163636652).

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

7557341666644 is a wasteful number, since it uses less digits than its factorization.

7557341666644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401585 (or 401583 counting only the distinct ones).

The product of its digits is 304819200, while the sum is 64.

The spelling of 7557341666644 in words is "seven trillion, five hundred fifty-seven billion, three hundred forty-one million, six hundred sixty-six thousand, six hundred forty-four".