13529072381 has 8 divisors (see below), whose sum is σ = 14911143744. Its totient is φ = 12172360320.

The previous prime is 13529072369. The next prime is 13529072393. The reversal of 13529072381 is 18327092531.

It is an interprime number because it is at equal distance from previous prime (13529072369) and next prime (13529072393).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13529072381 - 2⁶ = 13529072317 is a prime.

It is a super-2 number, since 2×13529072381² (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 (13529012381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6338705 + ... + 6340838.

It is an arithmetic number, because the mean of its divisors is an integer number (1863892968).

Almost surely, 2^13529072381 is an apocalyptic number.

13529072381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13529072381 is a deficient number, since it is larger than the sum of its proper divisors (1382071363).

13529072381 is a wasteful number, since it uses less digits than its factorization.

13529072381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12679651.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 13529072381 in words is "thirteen billion, five hundred twenty-nine million, seventy-two thousand, three hundred eighty-one".