42449161797 has 24 divisors (see below), whose sum is σ = 70265784576. Its totient is φ = 24190556256.

The previous prime is 42449161753. The next prime is 42449161801. The reversal of 42449161797 is 79716194424.

42449161797 is a `hidden beast` number, since 4 + 2 + 4 + 491 + 61 + 7 + 97 = 666.

It is not a de Polignac number, because 42449161797 - 2¹⁰ = 42449160773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42449161297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 894858 + ... + 941099.

It is an arithmetic number, because the mean of its divisors is an integer number (2927741024).

Almost surely, 2^42449161797 is an apocalyptic number.

It is an amenable number.

42449161797 is a deficient number, since it is larger than the sum of its proper divisors (27816622779).

42449161797 is a wasteful number, since it uses less digits than its factorization.

42449161797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836337 (or 1836334 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 42449161797 in words is "forty-two billion, four hundred forty-nine million, one hundred sixty-one thousand, seven hundred ninety-seven".