78295814861 has 8 divisors (see below), whose sum is σ = 87496875648. Its totient is φ = 69441964000.

The previous prime is 78295814851. The next prime is 78295814869. The reversal of 78295814861 is 16841859287.

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 78295814861 - 2³⁰ = 77222073037 is a prime.

It is a super-2 number, since 2×78295814861² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78295814861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78295814869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86802005 + ... + 86802906.

It is an arithmetic number, because the mean of its divisors is an integer number (10937109456).

Almost surely, 2^78295814861 is an apocalyptic number.

It is an amenable number.

78295814861 is a deficient number, since it is larger than the sum of its proper divisors (9201060787).

78295814861 is a wasteful number, since it uses less digits than its factorization.

78295814861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173604963.

The product of its digits is 7741440, while the sum is 59.

The spelling of 78295814861 in words is "seventy-eight billion, two hundred ninety-five million, eight hundred fourteen thousand, eight hundred sixty-one".