1154311023145 has 16 divisors (see below), whose sum is σ = 1590154030080. Its totient is φ = 787978102464.

The previous prime is 1154311023139. The next prime is 1154311023149. The reversal of 1154311023145 is 5413201134511.

It is a happy number.

It is not a de Polignac number, because 1154311023145 - 2¹³ = 1154311014953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1154311023149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73939090 + ... + 73954699.

It is an arithmetic number, because the mean of its divisors is an integer number (99384626880).

Almost surely, 2^{1154311023145} is an apocalyptic number.

It is an amenable number.

1154311023145 is a deficient number, since it is larger than the sum of its proper divisors (435843006935).

1154311023145 is a wasteful number, since it uses less digits than its factorization.

1154311023145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147894024.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 1154311023145 its reverse (5413201134511), we get a palindrome (6567512157656).

The spelling of 1154311023145 in words is "one trillion, one hundred fifty-four billion, three hundred eleven million, twenty-three thousand, one hundred forty-five".