667795162278 has 32 divisors (see below), whose sum is σ = 1336476516480. Its totient is φ = 222450750080.

The previous prime is 667795162267. The next prime is 667795162289. The reversal of 667795162278 is 872261597766.

It is an interprime number because it is at equal distance from previous prime (667795162267) and next prime (667795162289).

It is a super-4 number, since 4×667795162278⁴ (a number of 48 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91387501 + ... + 91394807.

It is an arithmetic number, because the mean of its divisors is an integer number (41764891140).

Almost surely, 2^667795162278 is an apocalyptic number.

667795162278 is an abundant number, since it is smaller than the sum of its proper divisors (668681354202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667795162278 is a wasteful number, since it uses less digits than its factorization.

667795162278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15332.

The product of its digits is 106686720, while the sum is 66.

The spelling of 667795162278 in words is "six hundred sixty-seven billion, seven hundred ninety-five million, one hundred sixty-two thousand, two hundred seventy-eight".