197369961426 has 72 divisors (see below), whose sum is σ = 470543165820. Its totient is φ = 59745692160.

The previous prime is 197369961413. The next prime is 197369961443. The reversal of 197369961426 is 624169963791.

197369961426 is a `hidden beast` number, since 1 + 9 + 7 + 3 + 6 + 9 + 9 + 614 + 2 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 179902374201 + 17467587225 = 424149^2 + 132165^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2028090 + ... + 2123178.

Almost surely, 2^197369961426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197369961426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235271582910).

197369961426 is an abundant number, since it is smaller than the sum of its proper divisors (273173204394).

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

197369961426 is a wasteful number, since it uses less digits than its factorization.

197369961426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96072 (or 96058 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 63.

The spelling of 197369961426 in words is "one hundred ninety-seven billion, three hundred sixty-nine million, nine hundred sixty-one thousand, four hundred twenty-six".