601988222641 has 15 divisors (see below), whose sum is σ = 652294232493. Its totient is φ = 555560399160.

The previous prime is 601988222579. The next prime is 601988222663. The reversal of 601988222641 is 146222889106.

The square root of 601988222641 is 775879.

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

It can be written as a sum of positive squares in 2 ways, for example, as 298475376241 + 303512846400 = 546329^2 + 550920^2 .

It is not a de Polignac number, because 601988222641 - 2²⁵ = 601954668209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (601988229641) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 131121256 + ... + 131125846.

Almost surely, 2^601988222641 is an apocalyptic number.

601988222641 is the 775879-th square number.

601988222641 is the 387940-th centered octagonal number.

It is an amenable number.

601988222641 is a deficient number, since it is larger than the sum of its proper divisors (50306009852).

601988222641 is an frugal number, since it uses more digits than its factorization.

601988222641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9234 (or 4604 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

Multiplying 601988222641 by its sum of digits (49), we get a square (29497422909409 = 5431153²).

The spelling of 601988222641 in words is "six hundred one billion, nine hundred eighty-eight million, two hundred twenty-two thousand, six hundred forty-one".