42986580643 has 4 divisors (see below), whose sum is σ = 43000860168. Its totient is φ = 42972301120.

The previous prime is 42986580619. The next prime is 42986580677. The reversal of 42986580643 is 34608568924.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42986580643 is a prime.

It is a super-2 number, since 2×42986580643² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42986587643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7135246 + ... + 7141267.

It is an arithmetic number, because the mean of its divisors is an integer number (10750215042).

Almost surely, 2^42986580643 is an apocalyptic number.

42986580643 is a deficient number, since it is larger than the sum of its proper divisors (14279525).

42986580643 is a wasteful number, since it uses less digits than its factorization.

42986580643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14279524.

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 42986580643 in words is "forty-two billion, nine hundred eighty-six million, five hundred eighty thousand, six hundred forty-three".