9974878752449 has 8 divisors (see below), whose sum is σ = 10743218070312. Its totient is φ = 9206688142080.

The previous prime is 9974878752413. The next prime is 9974878752451. The reversal of 9974878752449 is 9442578784799.

It can be written as a sum of positive squares in 4 ways, for example, as 11102415424 + 9963776337025 = 105368^2 + 3156545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9974878752449 - 2³² = 9970583785153 is a prime.

It is a super-2 number, since 2×9974878752449² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9974878752649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37037534 + ... + 37305879.

It is an arithmetic number, because the mean of its divisors is an integer number (1342902258789).

Almost surely, 2^{9974878752449} is an apocalyptic number.

It is an amenable number.

9974878752449 is a deficient number, since it is larger than the sum of its proper divisors (768339317863).

9974878752449 is a wasteful number, since it uses less digits than its factorization.

9974878752449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74353747.

The product of its digits is 10241925120, while the sum is 83.

The spelling of 9974878752449 in words is "nine trillion, nine hundred seventy-four billion, eight hundred seventy-eight million, seven hundred fifty-two thousand, four hundred forty-nine".