1375138887623 has 4 divisors (see below), whose sum is σ = 1375235599608. Its totient is φ = 1375042175640.

The previous prime is 1375138887569. The next prime is 1375138887653. The reversal of 1375138887623 is 3267888315731.

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 1375138887623 - 2¹⁶ = 1375138822087 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 (1375138887653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48334661 + ... + 48363102.

It is an arithmetic number, because the mean of its divisors is an integer number (343808899902).

Almost surely, 2^{1375138887623} is an apocalyptic number.

1375138887623 is a deficient number, since it is larger than the sum of its proper divisors (96711985).

1375138887623 is an equidigital number, since it uses as much as digits as its factorization.

1375138887623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96711984.

The product of its digits is 40642560, while the sum is 62.

The spelling of 1375138887623 in words is "one trillion, three hundred seventy-five billion, one hundred thirty-eight million, eight hundred eighty-seven thousand, six hundred twenty-three".