404545311097 has 2 divisors, whose sum is σ = 404545311098. Its totient is φ = 404545311096.

The previous prime is 404545311091. The next prime is 404545311161. The reversal of 404545311097 is 790113545404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369300505401 + 35244805696 = 607701^2 + 187736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404545311097 is a prime.

It is a super-2 number, since 2×404545311097² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (404545311091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202272655548 + 202272655549.

It is an arithmetic number, because the mean of its divisors is an integer number (202272655549).

Almost surely, 2^404545311097 is an apocalyptic number.

It is an amenable number.

404545311097 is a deficient number, since it is larger than the sum of its proper divisors (1).

404545311097 is an equidigital number, since it uses as much as digits as its factorization.

404545311097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 404545311097 in words is "four hundred four billion, five hundred forty-five million, three hundred eleven thousand, ninety-seven".