667557860043 has 8 divisors (see below), whose sum is σ = 890162534800. Its totient is φ = 444995879328.

The previous prime is 667557860023. The next prime is 667557860077. The reversal of 667557860043 is 340068755766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 667557860043 - 2²¹ = 667555762891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667557860023) 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, 10637008 + ... + 10699581.

It is an arithmetic number, because the mean of its divisors is an integer number (111270316850).

Almost surely, 2^667557860043 is an apocalyptic number.

667557860043 is a deficient number, since it is larger than the sum of its proper divisors (222604674757).

667557860043 is a wasteful number, since it uses less digits than its factorization.

667557860043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21347021.

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 667557860043 in words is "six hundred sixty-seven billion, five hundred fifty-seven million, eight hundred sixty thousand, forty-three".