4244542252145 has 16 divisors (see below), whose sum is σ = 5509207698960. Its totient is φ = 3120743718144.

The previous prime is 4244542252127. The next prime is 4244542252147. The reversal of 4244542252145 is 5412522454424.

It can be written as a sum of positive squares in 8 ways, for example, as 493704374881 + 3750837877264 = 702641^2 + 1936708^2 .

It is not a de Polignac number, because 4244542252145 - 2⁶ = 4244542252081 is a prime.

It is a super-2 number, since 2×4244542252145² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4244542252096 and 4244542252105.

It is not an unprimeable number, because it can be changed into a prime (4244542252147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142562954 + ... + 142592723.

It is an arithmetic number, because the mean of its divisors is an integer number (344325481185).

Almost surely, 2^{4244542252145} is an apocalyptic number.

It is an amenable number.

4244542252145 is a deficient number, since it is larger than the sum of its proper divisors (1264665446815).

4244542252145 is a wasteful number, since it uses less digits than its factorization.

4244542252145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285155924.

The product of its digits is 2048000, while the sum is 44.

The spelling of 4244542252145 in words is "four trillion, two hundred forty-four billion, five hundred forty-two million, two hundred fifty-two thousand, one hundred forty-five".