138044535463 has 4 divisors (see below), whose sum is σ = 138046510840. Its totient is φ = 138042560088.

The previous prime is 138044535407. The next prime is 138044535487. The reversal of 138044535463 is 364535440831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138044535463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138044535403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878868 + ... + 1023961.

It is an arithmetic number, because the mean of its divisors is an integer number (34511627710).

Almost surely, 2^138044535463 is an apocalyptic number.

138044535463 is a deficient number, since it is larger than the sum of its proper divisors (1975377).

138044535463 is an equidigital number, since it uses as much as digits as its factorization.

138044535463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975376.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 138044535463 in words is "one hundred thirty-eight billion, forty-four million, five hundred thirty-five thousand, four hundred sixty-three".