78462676325581 has 2 divisors, whose sum is σ = 78462676325582. Its totient is φ = 78462676325580.

The previous prime is 78462676325557. The next prime is 78462676325611. The reversal of 78462676325581 is 18552367626487.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50657525108100 + 27805151217481 = 7117410^2 + 5273059^2 .

It is a cyclic number.

It is not a de Polignac number, because 78462676325581 - 2⁹ = 78462676325069 is a prime.

It is a super-3 number, since 3×78462676325581³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 78462676325581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78462676325081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39231338162790 + 39231338162791.

It is an arithmetic number, because the mean of its divisors is an integer number (39231338162791).

Almost surely, 2^{78462676325581} is an apocalyptic number.

It is an amenable number.

78462676325581 is a deficient number, since it is larger than the sum of its proper divisors (1).

78462676325581 is an equidigital number, since it uses as much as digits as its factorization.

78462676325581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 812851200, while the sum is 70.

The spelling of 78462676325581 in words is "seventy-eight trillion, four hundred sixty-two billion, six hundred seventy-six million, three hundred twenty-five thousand, five hundred eighty-one".