1426154043666 has 64 divisors (see below), whose sum is σ = 3163229770752. Its totient is φ = 425055000000.

The previous prime is 1426154043631. The next prime is 1426154043667. The reversal of 1426154043666 is 6663404516241.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1426154043667) 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 31 ways as a sum of consecutive naturals, for example, 298141 + ... + 1714991.

It is an arithmetic number, because the mean of its divisors is an integer number (49425465168).

Almost surely, 2^{1426154043666} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1426154043666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1581614885376).

1426154043666 is an abundant number, since it is smaller than the sum of its proper divisors (1737075727086).

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

1426154043666 is a wasteful number, since it uses less digits than its factorization.

1426154043666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417119.

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 1426154043666 in words is "one trillion, four hundred twenty-six billion, one hundred fifty-four million, forty-three thousand, six hundred sixty-six".