5578434620641 has 9 divisors (see below), whose sum is σ = 5887536532371. Its totient is φ = 5284790284824.

The previous prime is 5578434620639. The next prime is 5578434620659. The reversal of 5578434620641 is 1460264348755.

The square root of 5578434620641 is 2361871.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 980240585041 + 4598194035600 = 990071^2 + 2144340^2 .

It is not a de Polignac number, because 5578434620641 - 2¹ = 5578434620639 is a prime.

It is a super-2 number, since 2×5578434620641² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5578434620141) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44813395 + ... + 44937703.

It is an arithmetic number, because the mean of its divisors is an integer number (654170725819).

Almost surely, 2^{5578434620641} is an apocalyptic number.

5578434620641 is the 2361871-st square number.

5578434620641 is the 1180936-th centered octagonal number.

It is an amenable number.

5578434620641 is a deficient number, since it is larger than the sum of its proper divisors (309101911730).

5578434620641 is an frugal number, since it uses more digits than its factorization.

5578434620641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248656 (or 124328 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 55.

The spelling of 5578434620641 in words is "five trillion, five hundred seventy-eight billion, four hundred thirty-four million, six hundred twenty thousand, six hundred forty-one".