64167885531066 has 64 divisors (see below), whose sum is σ = 135686162350080. Its totient is φ = 20174354553600.

The previous prime is 64167885531049. The next prime is 64167885531067. The reversal of 64167885531066 is 66013558876146.

It is a junction number, because it is equal to n+sod(n) for n = 64167885530988 and 64167885531006.

It is not an unprimeable number, because it can be changed into a prime (64167885531067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22566471 + ... + 25250373.

It is an arithmetic number, because the mean of its divisors is an integer number (2120096286720).

Almost surely, 2^{64167885531066} is an apocalyptic number.

64167885531066 is an abundant number, since it is smaller than the sum of its proper divisors (71518276819014).

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

64167885531066 is a wasteful number, since it uses less digits than its factorization.

64167885531066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684851.

The product of its (nonzero) digits is 174182400, while the sum is 66.

The spelling of 64167885531066 in words is "sixty-four trillion, one hundred sixty-seven billion, eight hundred eighty-five million, five hundred thirty-one thousand, sixty-six".