16461897373 has 2 divisors, whose sum is σ = 16461897374. Its totient is φ = 16461897372.

The previous prime is 16461897367. The next prime is 16461897377. The reversal of 16461897373 is 37379816461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16452423289 + 9474084 = 128267^2 + 3078^2 .

It is a cyclic number.

It is not a de Polignac number, because 16461897373 - 2¹³ = 16461889181 is a prime.

It is a super-2 number, since 2×16461897373² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16461897377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8230948686 + 8230948687.

It is an arithmetic number, because the mean of its divisors is an integer number (8230948687).

Almost surely, 2^16461897373 is an apocalyptic number.

It is an amenable number.

16461897373 is a deficient number, since it is larger than the sum of its proper divisors (1).

16461897373 is an equidigital number, since it uses as much as digits as its factorization.

16461897373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 55.

The spelling of 16461897373 in words is "sixteen billion, four hundred sixty-one million, eight hundred ninety-seven thousand, three hundred seventy-three".