897844550400 has 648 divisors, whose sum is σ = 3693113458944. Its totient is φ = 203848704000.

The previous prime is 897844550399. The next prime is 897844550431. The reversal of 897844550400 is 4055448798.

It is a happy number.

897844550400 is a `hidden beast` number, since 8 + 9 + 7 + 8 + 44 + 550 + 40 + 0 = 666.

It is a super-2 number, since 2×897844550400² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 60875827 + ... + 60890573.

Almost surely, 2^897844550400 is an apocalyptic number.

897844550400 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 897844550400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1846556729472).

897844550400 is an abundant number, since it is smaller than the sum of its proper divisors (2795268908544).

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

897844550400 is a wasteful number, since it uses less digits than its factorization.

897844550400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14937 (or 14915 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 897844550400 in words is "eight hundred ninety-seven billion, eight hundred forty-four million, five hundred fifty thousand, four hundred".