42956628728641 has 8 divisors (see below), whose sum is σ = 42970514116320. Its totient is φ = 42942745578432.

The previous prime is 42956628728621. The next prime is 42956628728647. The reversal of 42956628728641 is 14682782665924.

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 42956628728641 - 2⁷ = 42956628728513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42956628728647) 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, 38278830 + ... + 39385048.

It is an arithmetic number, because the mean of its divisors is an integer number (5371314264540).

Almost surely, 2^{42956628728641} is an apocalyptic number.

It is an amenable number.

42956628728641 is a deficient number, since it is larger than the sum of its proper divisors (13885387679).

42956628728641 is a wasteful number, since it uses less digits than its factorization.

42956628728641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118735.

The product of its digits is 557383680, while the sum is 70.

The spelling of 42956628728641 in words is "forty-two trillion, nine hundred fifty-six billion, six hundred twenty-eight million, seven hundred twenty-eight thousand, six hundred forty-one".