13702809481 has 27 divisors (see below), whose sum is σ = 14849950869. Its totient is φ = 12642372000.

The previous prime is 13702809479. The next prime is 13702809499. The reversal of 13702809481 is 18490820731.

The square root of 13702809481 is 117059.

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

It can be written as a sum of positive squares in 4 ways, for example, as 4447881 + 13698361600 = 2109^2 + 117040^2 .

It is not a de Polignac number, because 13702809481 - 2¹ = 13702809479 is a prime.

It is a super-2 number, since 2×13702809481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13702809451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 135671331 + ... + 135671431.

Almost surely, 2^13702809481 is an apocalyptic number.

13702809481 is the 117059-th square number.

13702809481 is the 58530-th centered octagonal number.

It is an amenable number.

13702809481 is a deficient number, since it is larger than the sum of its proper divisors (1147141388).

13702809481 is an frugal number, since it uses more digits than its factorization.

13702809481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 13702809481 in words is "thirteen billion, seven hundred two million, eight hundred nine thousand, four hundred eighty-one".