1426781516783 has 8 divisors (see below), whose sum is σ = 1630643525760. Its totient is φ = 1222928527320.

The previous prime is 1426781516729. The next prime is 1426781516819. The reversal of 1426781516783 is 3876151876241.

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 1426781516783 - 2²⁸ = 1426513081327 is a prime.

It is a super-2 number, since 2×1426781516783² (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 (1426781513783) 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 7 ways as a sum of consecutive naturals, for example, 1912433 + ... + 2551658.

It is an arithmetic number, because the mean of its divisors is an integer number (203830440720).

Almost surely, 2^{1426781516783} is an apocalyptic number.

1426781516783 is a deficient number, since it is larger than the sum of its proper divisors (203862008977).

1426781516783 is an equidigital number, since it uses as much as digits as its factorization.

1426781516783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509757.

The product of its digits is 13547520, while the sum is 59.

The spelling of 1426781516783 in words is "one trillion, four hundred twenty-six billion, seven hundred eighty-one million, five hundred sixteen thousand, seven hundred eighty-three".