140605210661 has 8 divisors (see below), whose sum is σ = 141822956544. Its totient is φ = 139389193440.

The previous prime is 140605210657. The next prime is 140605210663. The reversal of 140605210661 is 166012506041.

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

It is a cyclic number.

It is not a de Polignac number, because 140605210661 - 2² = 140605210657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140605210663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268520 + ... + 594401.

It is an arithmetic number, because the mean of its divisors is an integer number (17727869568).

Almost surely, 2^140605210661 is an apocalyptic number.

It is an amenable number.

140605210661 is a deficient number, since it is larger than the sum of its proper divisors (1217745883).

140605210661 is a wasteful number, since it uses less digits than its factorization.

140605210661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864331.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 140605210661 in words is "one hundred forty billion, six hundred five million, two hundred ten thousand, six hundred sixty-one".