643158948005 has 8 divisors (see below), whose sum is σ = 882046557312. Its totient is φ = 441023278608.

The previous prime is 643158947941. The next prime is 643158948017. The reversal of 643158948005 is 500849851346.

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 643158948005 - 2⁶ = 643158947941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9187984937 + ... + 9187985006.

It is an arithmetic number, because the mean of its divisors is an integer number (110255819664).

Almost surely, 2^643158948005 is an apocalyptic number.

It is an amenable number.

643158948005 is a deficient number, since it is larger than the sum of its proper divisors (238887609307).

643158948005 is a wasteful number, since it uses less digits than its factorization.

643158948005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18375969955.

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 643158948005 in words is "six hundred forty-three billion, one hundred fifty-eight million, nine hundred forty-eight thousand, five".