4252743215545 has 24 divisors (see below), whose sum is σ = 5622358536648. Its totient is φ = 3085761000960.

The previous prime is 4252743215531. The next prime is 4252743215573. The reversal of 4252743215545 is 5455123472524.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 283930188201 + 3968813027344 = 532851^2 + 1992188^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4252743215545 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7855042 + ... + 8378971.

It is an arithmetic number, because the mean of its divisors is an integer number (234264939027).

Almost surely, 2^{4252743215545} is an apocalyptic number.

It is an amenable number.

4252743215545 is a deficient number, since it is larger than the sum of its proper divisors (1369615321103).

4252743215545 is a wasteful number, since it uses less digits than its factorization.

4252743215545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16234473 (or 16234462 counting only the distinct ones).

The product of its digits is 6720000, while the sum is 49.

The spelling of 4252743215545 in words is "four trillion, two hundred fifty-two billion, seven hundred forty-three million, two hundred fifteen thousand, five hundred forty-five".