42497359681 has 8 divisors (see below), whose sum is σ = 48649228544. Its totient is φ = 36365695200.

The previous prime is 42497359657. The next prime is 42497359687. The reversal of 42497359681 is 18695379424.

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

It is a cyclic number.

It is not a de Polignac number, because 42497359681 - 2⁵ = 42497359649 is a prime.

It is a super-2 number, since 2×42497359681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42497359687) 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 7 ways as a sum of consecutive naturals, for example, 5046585 + ... + 5054998.

It is an arithmetic number, because the mean of its divisors is an integer number (6081153568).

Almost surely, 2^42497359681 is an apocalyptic number.

It is an amenable number.

42497359681 is a deficient number, since it is larger than the sum of its proper divisors (6151868863).

42497359681 is a wasteful number, since it uses less digits than its factorization.

42497359681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102191.

The product of its digits is 13063680, while the sum is 58.

The spelling of 42497359681 in words is "forty-two billion, four hundred ninety-seven million, three hundred fifty-nine thousand, six hundred eighty-one".