1154567451023 has 24 divisors (see below), whose sum is σ = 1332439425408. Its totient is φ = 980021814912.

The previous prime is 1154567450977. The next prime is 1154567451041. The reversal of 1154567451023 is 3201547654511.

It is a happy number.

It is not a de Polignac number, because 1154567451023 - 2¹⁰ = 1154567449999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154567451823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116818640 + ... + 116828522.

It is an arithmetic number, because the mean of its divisors is an integer number (55518309392).

Almost surely, 2^{1154567451023} is an apocalyptic number.

1154567451023 is a deficient number, since it is larger than the sum of its proper divisors (177871974385).

1154567451023 is an equidigital number, since it uses as much as digits as its factorization.

1154567451023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11423 (or 11310 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 1154567451023 in words is "one trillion, one hundred fifty-four billion, five hundred sixty-seven million, four hundred fifty-one thousand, twenty-three".