144443434815 has 32 divisors (see below), whose sum is σ = 256813474560. Its totient is φ = 77028954912.

The previous prime is 144443434783. The next prime is 144443434853. The reversal of 144443434815 is 518434344441.

It is not a de Polignac number, because 144443434815 - 2⁵ = 144443434783 is a prime.

It is a super-2 number, since 2×144443434815² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1501392 + ... + 1594698.

It is an arithmetic number, because the mean of its divisors is an integer number (8025421080).

Almost surely, 2^144443434815 is an apocalyptic number.

144443434815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

144443434815 is a deficient number, since it is larger than the sum of its proper divisors (112370039745).

144443434815 is a wasteful number, since it uses less digits than its factorization.

144443434815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104788 (or 104782 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 45.

The spelling of 144443434815 in words is "one hundred forty-four billion, four hundred forty-three million, four hundred thirty-four thousand, eight hundred fifteen".