1427334373521 has 27 divisors (see below), whose sum is σ = 2398352294793. Its totient is φ = 815605305480.

The previous prime is 1427334373513. The next prime is 1427334373811. The reversal of 1427334373521 is 1253734337241.

The square root of 1427334373521 is 1194711.

It is a perfect power (a square), and thus also a powerful number.

1427334373521 is a `hidden beast` number, since 1 + 4 + 27 + 3 + 34 + 3 + 73 + 521 = 666.

It is not a de Polignac number, because 1427334373521 - 2³ = 1427334373513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1427334373321) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25060486 + ... + 25117376.

Almost surely, 2^{1427334373521} is an apocalyptic number.

1427334373521 is the 1194711-st square number.

1427334373521 is the 597356-th centered octagonal number.

It is an amenable number.

1427334373521 is a deficient number, since it is larger than the sum of its proper divisors (971017921272).

1427334373521 is an frugal number, since it uses more digits than its factorization.

1427334373521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113802 (or 56901 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 45.

The spelling of 1427334373521 in words is "one trillion, four hundred twenty-seven billion, three hundred thirty-four million, three hundred seventy-three thousand, five hundred twenty-one".