42803618581 has 8 divisors (see below), whose sum is σ = 43084475424. Its totient is φ = 42522984720.

The previous prime is 42803618573. The next prime is 42803618587. The reversal of 42803618581 is 18581630824.

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 42803618581 - 2³ = 42803618573 is a prime.

It is a super-2 number, since 2×42803618581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42803618587) 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, 338535 + ... + 447451.

It is an arithmetic number, because the mean of its divisors is an integer number (5385559428).

Almost surely, 2^42803618581 is an apocalyptic number.

It is an amenable number.

42803618581 is a deficient number, since it is larger than the sum of its proper divisors (280856843).

42803618581 is a wasteful number, since it uses less digits than its factorization.

42803618581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111491.

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 42803618581 in words is "forty-two billion, eight hundred three million, six hundred eighteen thousand, five hundred eighty-one".