1178435146085 has 4 divisors (see below), whose sum is σ = 1414122175308. Its totient is φ = 942748116864.

The previous prime is 1178435146081. The next prime is 1178435146121. The reversal of 1178435146085 is 5806415348711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 612476846881 + 565958299204 = 782609^2 + 752302^2 .

It is a cyclic number.

It is not a de Polignac number, because 1178435146085 - 2² = 1178435146081 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 (1178435146081) 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, 117843514604 + ... + 117843514613.

It is an arithmetic number, because the mean of its divisors is an integer number (353530543827).

Almost surely, 2^{1178435146085} is an apocalyptic number.

It is an amenable number.

1178435146085 is a deficient number, since it is larger than the sum of its proper divisors (235687029223).

1178435146085 is an equidigital number, since it uses as much as digits as its factorization.

1178435146085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235687029222.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 1178435146085 in words is "one trillion, one hundred seventy-eight billion, four hundred thirty-five million, one hundred forty-six thousand, eighty-five".