1447391423623 has 8 divisors (see below), whose sum is σ = 1469410313328. Its totient is φ = 1425384770304.

The previous prime is 1447391423617. The next prime is 1447391423627. The reversal of 1447391423623 is 3263241937441.

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

It is a cyclic number.

It is not a de Polignac number, because 1447391423623 - 2¹⁷ = 1447391292551 is a prime.

It is a super-2 number, since 2×1447391423623² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1447391423627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2820586 + ... + 3294007.

It is an arithmetic number, because the mean of its divisors is an integer number (183676289166).

Almost surely, 2^{1447391423623} is an apocalyptic number.

1447391423623 is a deficient number, since it is larger than the sum of its proper divisors (22018889705).

1447391423623 is an equidigital number, since it uses as much as digits as its factorization.

1447391423623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6118193.

The product of its digits is 2612736, while the sum is 49.

The spelling of 1447391423623 in words is "one trillion, four hundred forty-seven billion, three hundred ninety-one million, four hundred twenty-three thousand, six hundred twenty-three".