13432137981 has 8 divisors (see below), whose sum is σ = 17914693920. Its totient is φ = 8952170352.

The previous prime is 13432137949. The next prime is 13432138001. The reversal of 13432137981 is 18973123431.

13432137981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13432137981 - 2⁵ = 13432137949 is a prime.

It is a super-2 number, since 2×13432137981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13432137941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634935 + ... + 655748.

It is an arithmetic number, because the mean of its divisors is an integer number (2239336740).

Almost surely, 2^13432137981 is an apocalyptic number.

It is an amenable number.

13432137981 is a deficient number, since it is larger than the sum of its proper divisors (4482555939).

13432137981 is a wasteful number, since it uses less digits than its factorization.

13432137981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294155.

The product of its digits is 108864, while the sum is 42.

The spelling of 13432137981 in words is "thirteen billion, four hundred thirty-two million, one hundred thirty-seven thousand, nine hundred eighty-one".