897169781952 has 672 divisors, whose sum is σ = 3033917752320. Its totient is φ = 251380039680.

The previous prime is 897169781939. The next prime is 897169781983. The reversal of 897169781952 is 259187961798.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (72).

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 95 ways as a sum of consecutive naturals, for example, 303814908 + ... + 303817860.

It is an arithmetic number, because the mean of its divisors is an integer number (4514758560).

Almost surely, 2^897169781952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897169781952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516958876160).

897169781952 is an abundant number, since it is smaller than the sum of its proper divisors (2136747970368).

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

897169781952 is a wasteful number, since it uses less digits than its factorization.

897169781952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101 (or 3088 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 72.

The spelling of 897169781952 in words is "eight hundred ninety-seven billion, one hundred sixty-nine million, seven hundred eighty-one thousand, nine hundred fifty-two".