897883081921 has 12 divisors (see below), whose sum is σ = 1046196991488. Its totient is φ = 768346146792.

The previous prime is 897883081913. The next prime is 897883081993. The reversal of 897883081921 is 129180388798.

It is not a de Polignac number, because 897883081921 - 2³ = 897883081913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (897883081321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15064281 + ... + 15123766.

It is an arithmetic number, because the mean of its divisors is an integer number (87183082624).

Almost surely, 2^897883081921 is an apocalyptic number.

It is an amenable number.

897883081921 is a deficient number, since it is larger than the sum of its proper divisors (148313909567).

897883081921 is a wasteful number, since it uses less digits than its factorization.

897883081921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30188668 (or 30188661 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 64.

The spelling of 897883081921 in words is "eight hundred ninety-seven billion, eight hundred eighty-three million, eighty-one thousand, nine hundred twenty-one".