897430415778 has 24 divisors (see below), whose sum is σ = 2094004304028. Its totient is φ = 276132435552.

The previous prime is 897430415773. The next prime is 897430415779. The reversal of 897430415778 is 877514034798.

897430415778 is a `hidden beast` number, since 8 + 97 + 430 + 41 + 5 + 7 + 78 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 738590704569 + 158839711209 = 859413^2 + 398547^2 .

It is not an unprimeable number, because it can be changed into a prime (897430415773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1917586125 + ... + 1917586592.

Almost surely, 2^897430415778 is an apocalyptic number.

897430415778 is an abundant number, since it is smaller than the sum of its proper divisors (1196573888250).

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

897430415778 is a wasteful number, since it uses less digits than its factorization.

897430415778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3835172738 (or 3835172735 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 63.

The spelling of 897430415778 in words is "eight hundred ninety-seven billion, four hundred thirty million, four hundred fifteen thousand, seven hundred seventy-eight".