1428775502431 has 2 divisors, whose sum is σ = 1428775502432. Its totient is φ = 1428775502430.

The previous prime is 1428775502423. The next prime is 1428775502471. The reversal of 1428775502431 is 1342055778241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428775502431 - 2³ = 1428775502423 is a prime.

It is a super-2 number, since 2×1428775502431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428775502471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714387751215 + 714387751216.

It is an arithmetic number, because the mean of its divisors is an integer number (714387751216).

Almost surely, 2^{1428775502431} is an apocalyptic number.

1428775502431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428775502431 is an equidigital number, since it uses as much as digits as its factorization.

1428775502431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 1428775502431 in words is "one trillion, four hundred twenty-eight billion, seven hundred seventy-five million, five hundred two thousand, four hundred thirty-one".