144921845847 has 24 divisors (see below), whose sum is σ = 198209922640. Its totient is φ = 94185331200.

The previous prime is 144921845839. The next prime is 144921845851. The reversal of 144921845847 is 748548129441.

It is not a de Polignac number, because 144921845847 - 2³ = 144921845839 is a prime.

It is a super-2 number, since 2×144921845847² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144921845857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6953979 + ... + 6974787.

Almost surely, 2^144921845847 is an apocalyptic number.

144921845847 is a deficient number, since it is larger than the sum of its proper divisors (53288076793).

144921845847 is a wasteful number, since it uses less digits than its factorization.

144921845847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22275 (or 22234 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 57.

The spelling of 144921845847 in words is "one hundred forty-four billion, nine hundred twenty-one million, eight hundred forty-five thousand, eight hundred forty-seven".