667051501859 has 4 divisors (see below), whose sum is σ = 667056293520. Its totient is φ = 667046710200.

The previous prime is 667051501849. The next prime is 667051501861. The reversal of 667051501859 is 958105150766.

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

It is a cyclic number.

It is not a de Polignac number, because 667051501859 - 2⁴ = 667051501843 is a prime.

It is a super-2 number, since 2×667051501859² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667051501859.

It is not an unprimeable number, because it can be changed into a prime (667051501849) 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, 2180567 + ... + 2467584.

It is an arithmetic number, because the mean of its divisors is an integer number (166764073380).

Almost surely, 2^667051501859 is an apocalyptic number.

667051501859 is a deficient number, since it is larger than the sum of its proper divisors (4791661).

667051501859 is a wasteful number, since it uses less digits than its factorization.

667051501859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4791660.

The product of its (nonzero) digits is 2268000, while the sum is 53.

The spelling of 667051501859 in words is "six hundred sixty-seven billion, fifty-one million, five hundred one thousand, eight hundred fifty-nine".