9779742598564 has 9 divisors (see below), whose sum is σ = 17114560492897. Its totient is φ = 4889868172024.

The previous prime is 9779742598541. The next prime is 9779742598627. The reversal of 9779742598564 is 4658952479779.

The square root of 9779742598564 is 3127258.

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., 3675878238564 + 6103864360000 = 1917258^2 + 2470600^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5472702 + ... + 7036330.

Almost surely, 2^{9779742598564} is an apocalyptic number.

9779742598564 is the 3127258-th square number.

It is an amenable number.

9779742598564 is a deficient number, since it is larger than the sum of its proper divisors (7334817894333).

9779742598564 is an frugal number, since it uses more digits than its factorization.

9779742598564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127262 (or 1563631 counting only the distinct ones).

The product of its digits is 9601804800, while the sum is 82.

The spelling of 9779742598564 in words is "nine trillion, seven hundred seventy-nine billion, seven hundred forty-two million, five hundred ninety-eight thousand, five hundred sixty-four".