445902053897 has 4 divisors (see below), whose sum is σ = 461277986820. Its totient is φ = 430526120976.

The previous prime is 445902053887. The next prime is 445902053899. The reversal of 445902053897 is 798350209544.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170341100176 + 275560953721 = 412724^2 + 524939^2 .

It is a cyclic number.

It is not a de Polignac number, because 445902053897 - 2⁶ = 445902053833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445902053899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7687966418 + ... + 7687966475.

It is an arithmetic number, because the mean of its divisors is an integer number (115319496705).

Almost surely, 2^445902053897 is an apocalyptic number.

It is an amenable number.

445902053897 is a deficient number, since it is larger than the sum of its proper divisors (15375932923).

445902053897 is a wasteful number, since it uses less digits than its factorization.

445902053897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15375932922.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 445902053897 in words is "four hundred forty-five billion, nine hundred two million, fifty-three thousand, eight hundred ninety-seven".