661259084183 has 8 divisors (see below), whose sum is σ = 665688353280. Its totient is φ = 656830474200.

The previous prime is 661259084173. The next prime is 661259084197. The reversal of 661259084183 is 381480952166.

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 661259084183 - 2¹⁶ = 661259018647 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 (661259084113) 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, 1937966 + ... + 2253492.

It is an arithmetic number, because the mean of its divisors is an integer number (83211044160).

Almost surely, 2^661259084183 is an apocalyptic number.

661259084183 is a deficient number, since it is larger than the sum of its proper divisors (4429269097).

661259084183 is a wasteful number, since it uses less digits than its factorization.

661259084183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329557.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 661259084183 in words is "six hundred sixty-one billion, two hundred fifty-nine million, eighty-four thousand, one hundred eighty-three".