140643232066 has 8 divisors (see below), whose sum is σ = 223374545100. Its totient is φ = 66185050368.

The previous prime is 140643232063. The next prime is 140643232069. The reversal of 140643232066 is 660232346041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140643232063) and next prime (140643232069).

It can be written as a sum of positive squares in 2 ways, for example, as 140538763225 + 104468841 = 374885^2 + 10221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (140643232063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2068282791 + ... + 2068282858.

Almost surely, 2^140643232066 is an apocalyptic number.

140643232066 is a deficient number, since it is larger than the sum of its proper divisors (82731313034).

140643232066 is a wasteful number, since it uses less digits than its factorization.

140643232066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136565668.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 140643232066 in words is "one hundred forty billion, six hundred forty-three million, two hundred thirty-two thousand, sixty-six".