13373537381 has 6 divisors (see below), whose sum is σ = 13980276870. Its totient is φ = 12792078728.

The previous prime is 13373537347. The next prime is 13373537383. The reversal of 13373537381 is 18373537331.

It can be written as a sum of positive squares in only one way, i.e., 13172152900 + 201384481 = 114770^2 + 14191^2 .

It is not a de Polignac number, because 13373537381 - 2²² = 13369343077 is a prime.

It is a super-2 number, since 2×13373537381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13373537383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12639866 + ... + 12640923.

It is an arithmetic number, because the mean of its divisors is an integer number (2330046145).

Almost surely, 2^13373537381 is an apocalyptic number.

It is an amenable number.

13373537381 is a deficient number, since it is larger than the sum of its proper divisors (606739489).

13373537381 is an equidigital number, since it uses as much as digits as its factorization.

13373537381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25280835 (or 25280812 counting only the distinct ones).

The product of its digits is 476280, while the sum is 44.

The spelling of 13373537381 in words is "thirteen billion, three hundred seventy-three million, five hundred thirty-seven thousand, three hundred eighty-one".