78251302461281 has 8 divisors (see below), whose sum is σ = 78677961986400. Its totient is φ = 77825169354240.

The previous prime is 78251302461271. The next prime is 78251302461289. The reversal of 78251302461281 is 18216420315287.

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

It is a cyclic number.

It is not a de Polignac number, because 78251302461281 - 2⁶ = 78251302461217 is a prime.

It is a super-2 number, since 2×78251302461281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78251302461289) 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 7 ways as a sum of consecutive naturals, for example, 131306411 + ... + 131901008.

It is an arithmetic number, because the mean of its divisors is an integer number (9834745248300).

Almost surely, 2^{78251302461281} is an apocalyptic number.

It is an amenable number.

78251302461281 is a deficient number, since it is larger than the sum of its proper divisors (426659525119).

78251302461281 is a wasteful number, since it uses less digits than its factorization.

78251302461281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263209039.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 78251302461281 in words is "seventy-eight trillion, two hundred fifty-one billion, three hundred two million, four hundred sixty-one thousand, two hundred eighty-one".