1428460479691 has 4 divisors (see below), whose sum is σ = 1632526262512. Its totient is φ = 1224394696872.

The previous prime is 1428460479683. The next prime is 1428460479713. The reversal of 1428460479691 is 1969740648241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1428460479691 - 2³ = 1428460479683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428460479491) 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 3 ways as a sum of consecutive naturals, for example, 102032891400 + ... + 102032891413.

It is an arithmetic number, because the mean of its divisors is an integer number (408131565628).

Almost surely, 2^{1428460479691} is an apocalyptic number.

1428460479691 is a deficient number, since it is larger than the sum of its proper divisors (204065782821).

1428460479691 is an equidigital number, since it uses as much as digits as its factorization.

1428460479691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204065782820.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 1428460479691 in words is "one trillion, four hundred twenty-eight billion, four hundred sixty million, four hundred seventy-nine thousand, six hundred ninety-one".