126433195681 has 8 divisors (see below), whose sum is σ = 136161688320. Its totient is φ = 116705111952.

The previous prime is 126433195591. The next prime is 126433195687. The reversal of 126433195681 is 186591334621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126433195681 - 2¹⁷ = 126433064609 is a prime.

It is a super-2 number, since 2×126433195681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126433195687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914640 + ... + 1043758.

It is an arithmetic number, because the mean of its divisors is an integer number (17020211040).

Almost surely, 2^126433195681 is an apocalyptic number.

It is an amenable number.

126433195681 is a deficient number, since it is larger than the sum of its proper divisors (9728492639).

126433195681 is a wasteful number, since it uses less digits than its factorization.

126433195681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204455.

The product of its digits is 933120, while the sum is 49.

The spelling of 126433195681 in words is "one hundred twenty-six billion, four hundred thirty-three million, one hundred ninety-five thousand, six hundred eighty-one".