140506226661 has 8 divisors (see below), whose sum is σ = 187343790624. Its totient is φ = 93669740240.

The previous prime is 140506226647. The next prime is 140506226723. The reversal of 140506226661 is 166622605041.

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 140506226661 - 2¹⁰ = 140506225637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140506226561) 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, 112015 + ... + 541811.

It is an arithmetic number, because the mean of its divisors is an integer number (23417973828).

Almost surely, 2^140506226661 is an apocalyptic number.

It is an amenable number.

140506226661 is a deficient number, since it is larger than the sum of its proper divisors (46837563963).

140506226661 is a wasteful number, since it uses less digits than its factorization.

140506226661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538771.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 140506226661 in words is "one hundred forty billion, five hundred six million, two hundred twenty-six thousand, six hundred sixty-one".