1427988387373 has 4 divisors (see below), whose sum is σ = 1428019815168. Its totient is φ = 1427956959580.

The previous prime is 1427988387361. The next prime is 1427988387451. The reversal of 1427988387373 is 3737838897241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1427988387373 - 2³³ = 1419398452781 is a prime.

It is a super-2 number, since 2×1427988387373² (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 (1427988387313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15645643 + ... + 15736648.

It is an arithmetic number, because the mean of its divisors is an integer number (357004953792).

Almost surely, 2^{1427988387373} is an apocalyptic number.

It is an amenable number.

1427988387373 is a deficient number, since it is larger than the sum of its proper divisors (31427795).

1427988387373 is an equidigital number, since it uses as much as digits as its factorization.

1427988387373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31427794.

The product of its digits is 341397504, while the sum is 70.

The spelling of 1427988387373 in words is "one trillion, four hundred twenty-seven billion, nine hundred eighty-eight million, three hundred eighty-seven thousand, three hundred seventy-three".