1154844487005 has 32 divisors (see below), whose sum is σ = 2062605980160. Its totient is φ = 546903094080.

The previous prime is 1154844486997. The next prime is 1154844487037. The reversal of 1154844487005 is 5007844484511.

It is a happy number.

It is not a de Polignac number, because 1154844487005 - 2³ = 1154844486997 is a prime.

It is a super-2 number, since 2×1154844487005² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 81377295 + ... + 81391484.

It is an arithmetic number, because the mean of its divisors is an integer number (64456436880).

Almost surely, 2^{1154844487005} is an apocalyptic number.

1154844487005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1154844487005 is a deficient number, since it is larger than the sum of its proper divisors (907761493155).

1154844487005 is a wasteful number, since it uses less digits than its factorization.

1154844487005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162768841.

The product of its (nonzero) digits is 2867200, while the sum is 51.

The spelling of 1154844487005 in words is "one trillion, one hundred fifty-four billion, eight hundred forty-four million, four hundred eighty-seven thousand, five".