1428686963641 has 12 divisors (see below), whose sum is σ = 1662093786612. Its totient is φ = 1224476967168.

The previous prime is 1428686963633. The next prime is 1428686963687. The reversal of 1428686963641 is 1463696868241.

It can be written as a sum of positive squares in 2 ways, for example, as 947710038016 + 480976925625 = 973504^2 + 693525^2 .

It is not a de Polignac number, because 1428686963641 - 2³ = 1428686963633 is a prime.

It is a super-2 number, since 2×1428686963641² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1428686963621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 787500 + ... + 1864813.

It is an arithmetic number, because the mean of its divisors is an integer number (138507815551).

Almost surely, 2^{1428686963641} is an apocalyptic number.

It is an amenable number.

1428686963641 is a deficient number, since it is larger than the sum of its proper divisors (233406822971).

1428686963641 is a wasteful number, since it uses less digits than its factorization.

1428686963641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663320 (or 2663313 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 64.

The spelling of 1428686963641 in words is "one trillion, four hundred twenty-eight billion, six hundred eighty-six million, nine hundred sixty-three thousand, six hundred forty-one".