4375388778049 has 27 divisors (see below), whose sum is σ = 4482000479593. Its totient is φ = 4271305738112.

The previous prime is 4375388778001. The next prime is 4375388778127. The reversal of 4375388778049 is 9408778835734.

The square root of 4375388778049 is 2091743.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 128409705649 + 4246979072400 = 358343^2 + 2060820^2 .

It is not a de Polignac number, because 4375388778049 - 2⁴¹ = 2176365522497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4375388778949) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25291264527 + ... + 25291264699.

Almost surely, 2^{4375388778049} is an apocalyptic number.

4375388778049 is the 2091743-rd square number.

4375388778049 is the 1045872-nd centered octagonal number.

It is an amenable number.

4375388778049 is a deficient number, since it is larger than the sum of its proper divisors (106611701544).

4375388778049 is an frugal number, since it uses more digits than its factorization.

4375388778049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 1137991680, while the sum is 73.

The spelling of 4375388778049 in words is "four trillion, three hundred seventy-five billion, three hundred eighty-eight million, seven hundred seventy-eight thousand, forty-nine".