67132881381 has 16 divisors (see below), whose sum is σ = 89643813120. Its totient is φ = 44688653760.

The previous prime is 67132881349. The next prime is 67132881407. The reversal of 67132881381 is 18318823176.

It is a happy number.

It is not a de Polignac number, because 67132881381 - 2⁵ = 67132881349 is a prime.

It is a super-2 number, since 2×67132881381² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67132881381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67132801381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6858711 + ... + 6868491.

It is an arithmetic number, because the mean of its divisors is an integer number (5602738320).

Almost surely, 2^67132881381 is an apocalyptic number.

It is an amenable number.

67132881381 is a deficient number, since it is larger than the sum of its proper divisors (22510931739).

67132881381 is a wasteful number, since it uses less digits than its factorization.

67132881381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12956.

The product of its digits is 387072, while the sum is 48.

The spelling of 67132881381 in words is "sixty-seven billion, one hundred thirty-two million, eight hundred eighty-one thousand, three hundred eighty-one".