1153810816278 has 16 divisors (see below), whose sum is σ = 2320513375680. Its totient is φ = 382454981576.

The previous prime is 1153810816271. The next prime is 1153810816321. The reversal of 1153810816278 is 8726180183511.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1153810816278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153810816271) 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, 537154800 + ... + 537156947.

It is an arithmetic number, because the mean of its divisors is an integer number (145032085980).

Almost surely, 2^{1153810816278} is an apocalyptic number.

1153810816278 is an abundant number, since it is smaller than the sum of its proper divisors (1166702559402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1153810816278 is a wasteful number, since it uses less digits than its factorization.

1153810816278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074311931.

The product of its (nonzero) digits is 645120, while the sum is 51.

Adding to 1153810816278 its reverse (8726180183511), we get a palindrome (9879990999789).

The spelling of 1153810816278 in words is "one trillion, one hundred fifty-three billion, eight hundred ten million, eight hundred sixteen thousand, two hundred seventy-eight".