2145144116605 has 32 divisors (see below), whose sum is σ = 2980078525440. Its totient is φ = 1451884262400.

The previous prime is 2145144116567. The next prime is 2145144116611. The reversal of 2145144116605 is 5066114415412.

It is not a de Polignac number, because 2145144116605 - 2²³ = 2145135727997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8886505 + ... + 9124705.

It is an arithmetic number, because the mean of its divisors is an integer number (93127453920).

Almost surely, 2^{2145144116605} is an apocalyptic number.

It is an amenable number.

2145144116605 is a deficient number, since it is larger than the sum of its proper divisors (834934408835).

2145144116605 is a wasteful number, since it uses less digits than its factorization.

2145144116605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241549.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 2145144116605 in words is "two trillion, one hundred forty-five billion, one hundred forty-four million, one hundred sixteen thousand, six hundred five".