138004400467 has 4 divisors (see below), whose sum is σ = 141370361496. Its totient is φ = 134638439440.

The previous prime is 138004400371. The next prime is 138004400497. The reversal of 138004400467 is 764004400831.

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

It is a cyclic number.

It is not a de Polignac number, because 138004400467 - 2¹¹ = 138004398419 is a prime.

It is a super-2 number, since 2×138004400467² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138004400497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1682980453 + ... + 1682980534.

It is an arithmetic number, because the mean of its divisors is an integer number (35342590374).

Almost surely, 2^138004400467 is an apocalyptic number.

138004400467 is a deficient number, since it is larger than the sum of its proper divisors (3365961029).

138004400467 is an equidigital number, since it uses as much as digits as its factorization.

138004400467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365961028.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 138004400467 in words is "one hundred thirty-eight billion, four million, four hundred thousand, four hundred sixty-seven".