78968420405 has 8 divisors (see below), whose sum is σ = 108299548032. Its totient is φ = 54149773968.

The previous prime is 78968420387. The next prime is 78968420411. The reversal of 78968420405 is 50402486987.

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 78968420405 - 2⁸ = 78968420149 is a prime.

It is a super-2 number, since 2×78968420405² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128120257 + ... + 1128120326.

It is an arithmetic number, because the mean of its divisors is an integer number (13537443504).

Almost surely, 2^78968420405 is an apocalyptic number.

It is an amenable number.

78968420405 is a deficient number, since it is larger than the sum of its proper divisors (29331127627).

78968420405 is a wasteful number, since it uses less digits than its factorization.

78968420405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256240595.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 78968420405 in words is "seventy-eight billion, nine hundred sixty-eight million, four hundred twenty thousand, four hundred five".