144914991805 has 16 divisors (see below), whose sum is σ = 179663781888. Its totient is φ = 112094640000.

The previous prime is 144914991797. The next prime is 144914991839. The reversal of 144914991805 is 508199419441.

It is a happy number.

It is not a de Polignac number, because 144914991805 - 2³ = 144914991797 is a prime.

It is a Duffinian number.

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, 227736 + ... + 584545.

It is an arithmetic number, because the mean of its divisors is an integer number (11228986368).

Almost surely, 2^144914991805 is an apocalyptic number.

It is an amenable number.

144914991805 is a deficient number, since it is larger than the sum of its proper divisors (34748790083).

144914991805 is a wasteful number, since it uses less digits than its factorization.

144914991805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813468.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 144914991805 in words is "one hundred forty-four billion, nine hundred fourteen million, nine hundred ninety-one thousand, eight hundred five".