9974878752497 has 16 divisors (see below), whose sum is σ = 10334240367360. Its totient is φ = 9616546957248.

The previous prime is 9974878752481. The next prime is 9974878752533. The reversal of 9974878752497 is 7942578784799.

9974878752497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9974878752497 - 2⁴ = 9974878752481 is a prime.

It is a super-2 number, since 2×9974878752497² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9974878752997) 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, 223394228 + ... + 223438874.

It is an arithmetic number, because the mean of its divisors is an integer number (645890022960).

Almost surely, 2^{9974878752497} is an apocalyptic number.

It is an amenable number.

9974878752497 is a deficient number, since it is larger than the sum of its proper divisors (359361614863).

9974878752497 is a wasteful number, since it uses less digits than its factorization.

9974878752497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56000.

The product of its digits is 17923368960, while the sum is 86.

The spelling of 9974878752497 in words is "nine trillion, nine hundred seventy-four billion, eight hundred seventy-eight million, seven hundred fifty-two thousand, four hundred ninety-seven".