1428811999481 has 4 divisors (see below), whose sum is σ = 1490934260352. Its totient is φ = 1366689738612.

The previous prime is 1428811999427. The next prime is 1428811999501. The reversal of 1428811999481 is 1849991188241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1428811999481 - 2¹⁰ = 1428811998457 is a prime.

It is a super-2 number, since 2×1428811999481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428811999421) 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 3 ways as a sum of consecutive naturals, for example, 31061130401 + ... + 31061130446.

It is an arithmetic number, because the mean of its divisors is an integer number (372733565088).

Almost surely, 2^{1428811999481} is an apocalyptic number.

It is an amenable number.

1428811999481 is a deficient number, since it is larger than the sum of its proper divisors (62122260871).

1428811999481 is an equidigital number, since it uses as much as digits as its factorization.

1428811999481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62122260870.

The product of its digits is 11943936, while the sum is 65.

The spelling of 1428811999481 in words is "one trillion, four hundred twenty-eight billion, eight hundred eleven million, nine hundred ninety-nine thousand, four hundred eighty-one".