1438647669071 has 4 divisors (see below), whose sum is σ = 1438650123144. Its totient is φ = 1438645215000.

The previous prime is 1438647669061. The next prime is 1438647669127. The reversal of 1438647669071 is 1709667468341.

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-1438647669071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1438647668995 and 1438647669013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438647669061) 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, 225341 + ... + 1711161.

It is an arithmetic number, because the mean of its divisors is an integer number (359662530786).

Almost surely, 2^{1438647669071} is an apocalyptic number.

1438647669071 is a deficient number, since it is larger than the sum of its proper divisors (2454073).

1438647669071 is an equidigital number, since it uses as much as digits as its factorization.

1438647669071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454072.

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 1438647669071 in words is "one trillion, four hundred thirty-eight billion, six hundred forty-seven million, six hundred sixty-nine thousand, seventy-one".