1155150131055 has 16 divisors (see below), whose sum is σ = 1849758924384. Its totient is φ = 615573831680.

The previous prime is 1155150131029. The next prime is 1155150131123. The reversal of 1155150131055 is 5501310515511.

It is a happy number.

It is not a de Polignac number, because 1155150131055 - 2¹² = 1155150126959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31621026 + ... + 31657535.

It is an arithmetic number, because the mean of its divisors is an integer number (115609932774).

Almost surely, 2^{1155150131055} is an apocalyptic number.

1155150131055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1155150131055 is a deficient number, since it is larger than the sum of its proper divisors (694608793329).

1155150131055 is a wasteful number, since it uses less digits than its factorization.

1155150131055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63279786.

The product of its (nonzero) digits is 9375, while the sum is 33.

Adding to 1155150131055 its reverse (5501310515511), we get a palindrome (6656460646566).

The spelling of 1155150131055 in words is "one trillion, one hundred fifty-five billion, one hundred fifty million, one hundred thirty-one thousand, fifty-five".