9751739981879 has 24 divisors (see below), whose sum is σ = 11504690800128. Its totient is φ = 8240149597680.

The previous prime is 9751739981869. The next prime is 9751739981899. The reversal of 9751739981879 is 9781899371579.

It is a happy number.

It is not a de Polignac number, because 9751739981879 - 2⁴⁰ = 8652228354103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9751739981797 and 9751739981806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9751739981869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39478334 + ... + 39724580.

It is an arithmetic number, because the mean of its divisors is an integer number (479362116672).

Almost surely, 2^{9751739981879} is an apocalyptic number.

9751739981879 is a deficient number, since it is larger than the sum of its proper divisors (1752950818249).

9751739981879 is a wasteful number, since it uses less digits than its factorization.

9751739981879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257715 (or 257708 counting only the distinct ones).

The product of its digits is 2160406080, while the sum is 83.

The spelling of 9751739981879 in words is "nine trillion, seven hundred fifty-one billion, seven hundred thirty-nine million, nine hundred eighty-one thousand, eight hundred seventy-nine".