897915443040 has 1152 divisors, whose sum is σ = 4043223475200. Its totient is φ = 186549350400.

The previous prime is 897915443003. The next prime is 897915443111. The reversal of 897915443040 is 40344519798.

897915443040 is a `hidden beast` number, since 8 + 9 + 7 + 91 + 544 + 3 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 146691180 + ... + 146697300.

It is an arithmetic number, because the mean of its divisors is an integer number (3509742600).

Almost surely, 2^897915443040 is an apocalyptic number.

897915443040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897915443040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021611737600).

897915443040 is an abundant number, since it is smaller than the sum of its proper divisors (3145308032160).

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

897915443040 is a wasteful number, since it uses less digits than its factorization.

897915443040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6183 (or 6149 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 897915443040 in words is "eight hundred ninety-seven billion, nine hundred fifteen million, four hundred forty-three thousand, forty".