1428334250697 has 6 divisors (see below), whose sum is σ = 2063149473242. Its totient is φ = 952222833792.

The previous prime is 1428334250687. The next prime is 1428334250699. The reversal of 1428334250697 is 7960524338241.

1428334250697 is a `hidden beast` number, since 1 + 4 + 2 + 8 + 3 + 3 + 42 + 506 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1234152133776 + 194182116921 = 1110924^2 + 440661^2 .

It is not a de Polignac number, because 1428334250697 - 2¹² = 1428334246601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428334250699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79351902808 + ... + 79351902825.

It is a 1-persistent number, because it is pandigital, but 2⋅1428334250697 = 2856668501394 is not.

Almost surely, 2^{1428334250697} is an apocalyptic number.

It is an amenable number.

1428334250697 is a deficient number, since it is larger than the sum of its proper divisors (634815222545).

1428334250697 is a wasteful number, since it uses less digits than its factorization.

1428334250697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158703805639 (or 158703805636 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 1428334250697 in words is "one trillion, four hundred twenty-eight billion, three hundred thirty-four million, two hundred fifty thousand, six hundred ninety-seven".