1117666875778 has 8 divisors (see below), whose sum is σ = 1676513871180. Its totient is φ = 558828918720.

The previous prime is 1117666875761. The next prime is 1117666875779. The reversal of 1117666875778 is 8775786667111.

It can be written as a sum of positive squares in 2 ways, for example, as 713090735809 + 404576139969 = 844447^2 + 636063^2 .

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

It is a super-2 number, since 2×1117666875778² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1117666875779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1941483 + ... + 2450446.

Almost surely, 2^{1117666875778} is an apocalyptic number.

1117666875778 is a deficient number, since it is larger than the sum of its proper divisors (558846995402).

1117666875778 is a wasteful number, since it uses less digits than its factorization.

1117666875778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519172.

The product of its digits is 165957120, while the sum is 70.

The spelling of 1117666875778 in words is "one trillion, one hundred seventeen billion, six hundred sixty-six million, eight hundred seventy-five thousand, seven hundred seventy-eight".