1155323653078 has 16 divisors (see below), whose sum is σ = 2044443700224. Its totient is φ = 479166491880.

The previous prime is 1155323653073. The next prime is 1155323653123. The reversal of 1155323653078 is 8703563235511.

It is a super-2 number, since 2×1155323653078² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155323653073) 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, 1331017600 + ... + 1331018467.

It is an arithmetic number, because the mean of its divisors is an integer number (127777731264).

Almost surely, 2^{1155323653078} is an apocalyptic number.

1155323653078 is a deficient number, since it is larger than the sum of its proper divisors (889120047146).

1155323653078 is a wasteful number, since it uses less digits than its factorization.

1155323653078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662036107.

The product of its (nonzero) digits is 2268000, while the sum is 49.

Adding to 1155323653078 its reverse (8703563235511), we get a palindrome (9858886888589).

The spelling of 1155323653078 in words is "one trillion, one hundred fifty-five billion, three hundred twenty-three million, six hundred fifty-three thousand, seventy-eight".