144435115521431 has 24 divisors (see below), whose sum is σ = 170048733934464. Its totient is φ = 120110856858720.

The previous prime is 144435115521421. The next prime is 144435115521467. The reversal of 144435115521431 is 134125511534441.

It is not a de Polignac number, because 144435115521431 - 2³⁴ = 144417935652247 is a prime.

It is a super-2 number, since 2×144435115521431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144435115521401) 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, 4124465 + ... + 17489466.

It is an arithmetic number, because the mean of its divisors is an integer number (7085363913936).

Almost surely, 2^{144435115521431} is an apocalyptic number.

144435115521431 is a deficient number, since it is larger than the sum of its proper divisors (25613618413033).

144435115521431 is an equidigital number, since it uses as much as digits as its factorization.

144435115521431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21614279 (or 21614130 counting only the distinct ones).

The product of its digits is 576000, while the sum is 44.

The spelling of 144435115521431 in words is "one hundred forty-four trillion, four hundred thirty-five billion, one hundred fifteen million, five hundred twenty-one thousand, four hundred thirty-one".