144171561278 has 16 divisors (see below), whose sum is σ = 218126875536. Its totient is φ = 71464809600.

The previous prime is 144171561277. The next prime is 144171561293. The reversal of 144171561278 is 872165171441.

It is a happy number.

It is a super-2 number, since 2×144171561278² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144171561277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420701 + ... + 682152.

It is an arithmetic number, because the mean of its divisors is an integer number (13632929721).

Almost surely, 2^144171561278 is an apocalyptic number.

144171561278 is a deficient number, since it is larger than the sum of its proper divisors (73955314258).

144171561278 is a wasteful number, since it uses less digits than its factorization.

144171561278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103419.

The product of its digits is 376320, while the sum is 47.

The spelling of 144171561278 in words is "one hundred forty-four billion, one hundred seventy-one million, five hundred sixty-one thousand, two hundred seventy-eight".