197412890256 has 100 divisors (see below), whose sum is σ = 573404582124. Its totient is φ = 65569996800.

The previous prime is 197412890179. The next prime is 197412890273. The reversal of 197412890256 is 652098214791.

It is a happy number.

197412890256 is a `hidden beast` number, since 1 + 97 + 412 + 8 + 90 + 2 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 106380345600 + 91032544656 = 326160^2 + 301716^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 93136 + ... + 635216.

Almost surely, 2^197412890256 is an apocalyptic number.

197412890256 is a gapful number since it is divisible by the number (16) 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 197412890256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286702291062).

197412890256 is an abundant number, since it is smaller than the sum of its proper divisors (375991691868).

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

197412890256 is a wasteful number, since it uses less digits than its factorization.

197412890256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542382 (or 542367 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 197412890256 in words is "one hundred ninety-seven billion, four hundred twelve million, eight hundred ninety thousand, two hundred fifty-six".