196756341421 has 4 divisors (see below), whose sum is σ = 196838703100. Its totient is φ = 196673979744.

The previous prime is 196756341413. The next prime is 196756341451. The reversal of 196756341421 is 124143657691.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63247220100 + 133509121321 = 251490^2 + 365389^2 .

It is a cyclic number.

It is not a de Polignac number, because 196756341421 - 2³ = 196756341413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196756341451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41177256 + ... + 41182033.

It is an arithmetic number, because the mean of its divisors is an integer number (49209675775).

Almost surely, 2^196756341421 is an apocalyptic number.

It is an amenable number.

196756341421 is a deficient number, since it is larger than the sum of its proper divisors (82361679).

196756341421 is an equidigital number, since it uses as much as digits as its factorization.

196756341421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82361678.

The product of its digits is 1088640, while the sum is 49.

The spelling of 196756341421 in words is "one hundred ninety-six billion, seven hundred fifty-six million, three hundred forty-one thousand, four hundred twenty-one".