980513863681 has 9 divisors (see below), whose sum is σ = 1077766880673. Its totient is φ = 891366337620.

The previous prime is 980513863669. The next prime is 980513863709. The reversal of 980513863681 is 186368315089.

The square root of 980513863681 is 990209.

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

It is not a de Polignac number, because 980513863681 - 2¹¹ = 980513861633 is a prime.

It is a super-2 number, since 2×980513863681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980513863621) 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, 10847290 + ... + 10937308.

Almost surely, 2^980513863681 is an apocalyptic number.

980513863681 is the 990209-th square number.

980513863681 is the 495105-th centered octagonal number.

It is an amenable number.

980513863681 is a deficient number, since it is larger than the sum of its proper divisors (97253016992).

980513863681 is an frugal number, since it uses more digits than its factorization.

980513863681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180060 (or 90030 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 980513863681 in words is "nine hundred eighty billion, five hundred thirteen million, eight hundred sixty-three thousand, six hundred eighty-one".