667487130919 has 16 divisors (see below), whose sum is σ = 780645938688. Its totient is φ = 558781346592.

The previous prime is 667487130911. The next prime is 667487130991. The reversal of 667487130919 is 919031784766.

It is not a de Polignac number, because 667487130919 - 2³ = 667487130911 is a prime.

It is a super-2 number, since 2×667487130919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667487130911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3949734 + ... + 4115260.

It is an arithmetic number, because the mean of its divisors is an integer number (48790371168).

Almost surely, 2^667487130919 is an apocalyptic number.

667487130919 is a deficient number, since it is larger than the sum of its proper divisors (113158807769).

667487130919 is a wasteful number, since it uses less digits than its factorization.

667487130919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178974.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 667487130919 in words is "six hundred sixty-seven billion, four hundred eighty-seven million, one hundred thirty thousand, nine hundred nineteen".