1427446563378 has 128 divisors (see below), whose sum is σ = 3216251888640. Its totient is φ = 418654529280.

The previous prime is 1427446563371. The next prime is 1427446563409. The reversal of 1427446563378 is 8733656447241.

It is not an unprimeable number, because it can be changed into a prime (1427446563371) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 214553500 + ... + 214560152.

It is an arithmetic number, because the mean of its divisors is an integer number (25126967880).

Almost surely, 2^{1427446563378} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1427446563378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1608125944320).

1427446563378 is an abundant number, since it is smaller than the sum of its proper divisors (1788805325262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1427446563378 is a wasteful number, since it uses less digits than its factorization.

1427446563378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7544.

The product of its digits is 81285120, while the sum is 60.

The spelling of 1427446563378 in words is "one trillion, four hundred twenty-seven billion, four hundred forty-six million, five hundred sixty-three thousand, three hundred seventy-eight".