42621232643 has 8 divisors (see below), whose sum is σ = 46498488816. Its totient is φ = 38744409600.

The previous prime is 42621232637. The next prime is 42621232657. The reversal of 42621232643 is 34623212624.

It is a happy number.

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 42621232643 - 2⁸ = 42621232387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42621232603) 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, 118055 + ... + 314927.

It is an arithmetic number, because the mean of its divisors is an integer number (5812311102).

Almost surely, 2^42621232643 is an apocalyptic number.

42621232643 is a deficient number, since it is larger than the sum of its proper divisors (3877256173).

42621232643 is a wasteful number, since it uses less digits than its factorization.

42621232643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216565.

The product of its digits is 82944, while the sum is 35.

The spelling of 42621232643 in words is "forty-two billion, six hundred twenty-one million, two hundred thirty-two thousand, six hundred forty-three".