667165621210 has 32 divisors (see below), whose sum is σ = 1323041693184. Its totient is φ = 240203640000.

The previous prime is 667165621051. The next prime is 667165621211. The reversal of 667165621210 is 12126561766.

It is a super-2 number, since 2×667165621210² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667165621211) 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, 30014346 + ... + 30036565.

It is an arithmetic number, because the mean of its divisors is an integer number (41345052912).

Almost surely, 2^667165621210 is an apocalyptic number.

667165621210 is a deficient number, since it is larger than the sum of its proper divisors (655876071974).

667165621210 is a wasteful number, since it uses less digits than its factorization.

667165621210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60051030.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 667165621210 in words is "six hundred sixty-seven billion, one hundred sixty-five million, six hundred twenty-one thousand, two hundred ten".