1206642609786 has 8 divisors (see below), whose sum is σ = 2413285219584. Its totient is φ = 402214203260.

The previous prime is 1206642609779. The next prime is 1206642609793. The reversal of 1206642609786 is 6879062466021.

It is an interprime number because it is at equal distance from previous prime (1206642609779) and next prime (1206642609793).

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

1206642609786 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100553550810 + ... + 100553550821.

It is an arithmetic number, because the mean of its divisors is an integer number (301660652448).

Almost surely, 2^{1206642609786} is an apocalyptic number.

1206642609786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1206642609786 is a wasteful number, since it uses less digits than its factorization.

1206642609786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201107101636.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 1206642609786 in words is "one trillion, two hundred six billion, six hundred forty-two million, six hundred nine thousand, seven hundred eighty-six".