66144322346 has 16 divisors (see below), whose sum is σ = 105483648384. Its totient is φ = 31037367504.

The previous prime is 66144322339. The next prime is 66144322367. The reversal of 66144322346 is 64322344166.

It is a super-2 number, since 2×66144322346² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13562846 + ... + 13567721.

It is an arithmetic number, because the mean of its divisors is an integer number (6592728024).

Almost surely, 2^66144322346 is an apocalyptic number.

66144322346 is a deficient number, since it is larger than the sum of its proper divisors (39339326038).

66144322346 is a wasteful number, since it uses less digits than its factorization.

66144322346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27130645.

The product of its digits is 497664, while the sum is 41.

The spelling of 66144322346 in words is "sixty-six billion, one hundred forty-four million, three hundred twenty-two thousand, three hundred forty-six".