42897819493 has 8 divisors (see below), whose sum is σ = 43329116160. Its totient is φ = 42467209200.

The previous prime is 42897819457. The next prime is 42897819509. The reversal of 42897819493 is 39491879824.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42897819493 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 (42897819413) 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, 45505 + ... + 296422.

It is an arithmetic number, because the mean of its divisors is an integer number (5416139520).

Almost surely, 2^42897819493 is an apocalyptic number.

It is an amenable number.

42897819493 is a deficient number, since it is larger than the sum of its proper divisors (431296667).

42897819493 is a wasteful number, since it uses less digits than its factorization.

42897819493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343187.

The product of its digits is 31352832, while the sum is 64.

The spelling of 42897819493 in words is "forty-two billion, eight hundred ninety-seven million, eight hundred nineteen thousand, four hundred ninety-three".