144605011402261 has 4 divisors (see below), whose sum is σ = 146036744188524. Its totient is φ = 143173278616000.

The previous prime is 144605011402223. The next prime is 144605011402277. The reversal of 144605011402261 is 162204110506441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139736395630225 + 4868615772036 = 11821015^2 + 2206494^2 .

It is a cyclic number.

It is not a de Polignac number, because 144605011402261 - 2¹³ = 144605011394069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144605011402261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144605011403261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715866392980 + ... + 715866393181.

It is an arithmetic number, because the mean of its divisors is an integer number (36509186047131).

Almost surely, 2^{144605011402261} is an apocalyptic number.

It is an amenable number.

144605011402261 is a deficient number, since it is larger than the sum of its proper divisors (1431732786263).

144605011402261 is a wasteful number, since it uses less digits than its factorization.

144605011402261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431732786262.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 144605011402261 in words is "one hundred forty-four trillion, six hundred five billion, eleven million, four hundred two thousand, two hundred sixty-one".