1206695181648 has 160 divisors (see below), whose sum is σ = 3484007759232. Its totient is φ = 356782233600.

The previous prime is 1206695181617. The next prime is 1206695181707. The reversal of 1206695181648 is 8461815966021.

It is a happy number.

It is a super-2 number, since 2×1206695181648² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4945986 + ... + 5184222.

Almost surely, 2^{1206695181648} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206695181648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742003879616).

1206695181648 is an abundant number, since it is smaller than the sum of its proper divisors (2277312577584).

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

1206695181648 is a wasteful number, since it uses less digits than its factorization.

1206695181648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238493 (or 238487 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 57.

The spelling of 1206695181648 in words is "one trillion, two hundred six billion, six hundred ninety-five million, one hundred eighty-one thousand, six hundred forty-eight".