13020881481 has 6 divisors (see below), whose sum is σ = 18807939930. Its totient is φ = 8680587648.

The previous prime is 13020881479. The next prime is 13020881483. The reversal of 13020881481 is 18418802031.

It is an interprime number because it is at equal distance from previous prime (13020881479) and next prime (13020881483).

It can be written as a sum of positive squares in only one way, i.e., 11872281600 + 1148599881 = 108960^2 + 33891^2 .

It is not a de Polignac number, because 13020881481 - 2¹ = 13020881479 is a prime.

It is a super-2 number, since 2×13020881481² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13020881483) 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 5 ways as a sum of consecutive naturals, for example, 723382296 + ... + 723382313.

It is an arithmetic number, because the mean of its divisors is an integer number (3134656655).

Almost surely, 2^13020881481 is an apocalyptic number.

It is an amenable number.

13020881481 is a deficient number, since it is larger than the sum of its proper divisors (5787058449).

13020881481 is a wasteful number, since it uses less digits than its factorization.

13020881481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446764615 (or 1446764612 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The spelling of 13020881481 in words is "thirteen billion, twenty million, eight hundred eighty-one thousand, four hundred eighty-one".