1173456778339 has 4 divisors (see below), whose sum is σ = 1173716454640. Its totient is φ = 1173197102040.

The previous prime is 1173456778337. The next prime is 1173456778363. The reversal of 1173456778339 is 9338776543711.

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

It is a cyclic number.

It is not a de Polignac number, because 1173456778339 - 2¹ = 1173456778337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1173456778337) 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, 129831372 + ... + 129840409.

It is an arithmetic number, because the mean of its divisors is an integer number (293429113660).

Almost surely, 2^{1173456778339} is an apocalyptic number.

1173456778339 is a deficient number, since it is larger than the sum of its proper divisors (259676301).

1173456778339 is an equidigital number, since it uses as much as digits as its factorization.

1173456778339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259676300.

The product of its digits is 80015040, while the sum is 64.

The spelling of 1173456778339 in words is "one trillion, one hundred seventy-three billion, four hundred fifty-six million, seven hundred seventy-eight thousand, three hundred thirty-nine".