1181078480427 has 8 divisors (see below), whose sum is σ = 1667404913616. Its totient is φ = 741068850432.

The previous prime is 1181078480419. The next prime is 1181078480429. The reversal of 1181078480427 is 7240848701811.

It is a happy number.

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

It is not a de Polignac number, because 1181078480427 - 2³ = 1181078480419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 23158401577 = 1181078480427 / (1 + 1 + 8 + 1 + 0 + 7 + 8 + 4 + 8 + 0 + 4 + 2 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 1181078480427.

It is not an unprimeable number, because it can be changed into a prime (1181078480429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11579200738 + ... + 11579200839.

It is an arithmetic number, because the mean of its divisors is an integer number (208425614202).

Almost surely, 2^{1181078480427} is an apocalyptic number.

1181078480427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1181078480427 is a deficient number, since it is larger than the sum of its proper divisors (486326433189).

1181078480427 is a wasteful number, since it uses less digits than its factorization.

1181078480427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23158401597.

The product of its (nonzero) digits is 802816, while the sum is 51.

The spelling of 1181078480427 in words is "one trillion, one hundred eighty-one billion, seventy-eight million, four hundred eighty thousand, four hundred twenty-seven".