1155249866378 has 8 divisors (see below), whose sum is σ = 1735826887872. Its totient is φ = 576640903756.

The previous prime is 1155249866371. The next prime is 1155249866399. The reversal of 1155249866378 is 8736689425511.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1155249866371) 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, 492013250 + ... + 492015597.

It is an arithmetic number, because the mean of its divisors is an integer number (216978360984).

Almost surely, 2^{1155249866378} is an apocalyptic number.

1155249866378 is a deficient number, since it is larger than the sum of its proper divisors (580577021494).

1155249866378 is an equidigital number, since it uses as much as digits as its factorization.

1155249866378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984029436.

The product of its digits is 87091200, while the sum is 65.

The spelling of 1155249866378 in words is "one trillion, one hundred fifty-five billion, two hundred forty-nine million, eight hundred sixty-six thousand, three hundred seventy-eight".