1206642609785 has 8 divisors (see below), whose sum is σ = 1468365091776. Its totient is φ = 951718114480.

The previous prime is 1206642609779. The next prime is 1206642609793. The reversal of 1206642609785 is 5879062466021.

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

It is not a de Polignac number, because 1206642609785 - 2⁴ = 1206642609769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1206642609785.

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, 1699496279 + ... + 1699496988.

It is an arithmetic number, because the mean of its divisors is an integer number (183545636472).

Almost surely, 2^{1206642609785} is an apocalyptic number.

It is an amenable number.

1206642609785 is a deficient number, since it is larger than the sum of its proper divisors (261722481991).

1206642609785 is an equidigital number, since it uses as much as digits as its factorization.

1206642609785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398993343.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 1206642609785 in words is "one trillion, two hundred six billion, six hundred forty-two million, six hundred nine thousand, seven hundred eighty-five".