1155323643454 has 16 divisors (see below), whose sum is σ = 1792825812000. Its totient is φ = 557716866784.

The previous prime is 1155323643451. The next prime is 1155323643493. The reversal of 1155323643454 is 4543463235511.

It is a happy number.

It is a super-2 number, since 2×1155323643454² (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 (1155323643451) 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, 850599 + ... + 1741885.

It is an arithmetic number, because the mean of its divisors is an integer number (112051613250).

Almost surely, 2^{1155323643454} is an apocalyptic number.

1155323643454 is a deficient number, since it is larger than the sum of its proper divisors (637502168546).

1155323643454 is a wasteful number, since it uses less digits than its factorization.

1155323643454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913667.

The product of its digits is 2592000, while the sum is 46.

Adding to 1155323643454 its reverse (4543463235511), we get a palindrome (5698786878965).

The spelling of 1155323643454 in words is "one trillion, one hundred fifty-five billion, three hundred twenty-three million, six hundred forty-three thousand, four hundred fifty-four".