16425334726397 has 2 divisors, whose sum is σ = 16425334726398. Its totient is φ = 16425334726396.

The previous prime is 16425334726343. The next prime is 16425334726453. The reversal of 16425334726397 is 79362743352461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16424490765796 + 843960601 = 4052714^2 + 29051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16425334726397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16425334726897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8212667363198 + 8212667363199.

It is an arithmetic number, because the mean of its divisors is an integer number (8212667363199).

Almost surely, 2^{16425334726397} is an apocalyptic number.

It is an amenable number.

16425334726397 is a deficient number, since it is larger than the sum of its proper divisors (1).

16425334726397 is an equidigital number, since it uses as much as digits as its factorization.

16425334726397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137168640, while the sum is 62.

The spelling of 16425334726397 in words is "sixteen trillion, four hundred twenty-five billion, three hundred thirty-four million, seven hundred twenty-six thousand, three hundred ninety-seven".