667168761963 has 16 divisors (see below), whose sum is σ = 979848919296. Its totient is φ = 400419025440.

The previous prime is 667168761937. The next prime is 667168761979. The reversal of 667168761963 is 369167861766.

It is not a de Polignac number, because 667168761963 - 2²² = 667164567659 is a prime.

It is a super-2 number, since 2×667168761963² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 667168761894 and 667168761903.

It is not an unprimeable number, because it can be changed into a prime (667168761163) 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, 98138520 + ... + 98145317.

It is an arithmetic number, because the mean of its divisors is an integer number (61240557456).

Almost surely, 2^667168761963 is an apocalyptic number.

667168761963 is a deficient number, since it is larger than the sum of its proper divisors (312680157333).

667168761963 is a wasteful number, since it uses less digits than its factorization.

667168761963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196283954.

The product of its digits is 82301184, while the sum is 66.

The spelling of 667168761963 in words is "six hundred sixty-seven billion, one hundred sixty-eight million, seven hundred sixty-one thousand, nine hundred sixty-three".