897457128408 has 64 divisors (see below), whose sum is σ = 2502868636800. Its totient is φ = 297960516000.

The previous prime is 897457128367. The next prime is 897457128431. The reversal of 897457128408 is 804821754798.

897457128408 is a `hidden beast` number, since 8 + 97 + 457 + 12 + 84 + 0 + 8 = 666.

It is a super-2 number, since 2×897457128408² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8222466 + ... + 8330897.

It is an arithmetic number, because the mean of its divisors is an integer number (39107322450).

Almost surely, 2^897457128408 is an apocalyptic number.

It is an amenable number.

897457128408 is an abundant number, since it is smaller than the sum of its proper divisors (1605411508392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

897457128408 is a wasteful number, since it uses less digits than its factorization.

897457128408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16553629 (or 16553619 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 63.

The spelling of 897457128408 in words is "eight hundred ninety-seven billion, four hundred fifty-seven million, one hundred twenty-eight thousand, four hundred eight".