78909306481 has 8 divisors (see below), whose sum is σ = 80094140000. Its totient is φ = 77724681408.

The previous prime is 78909306461. The next prime is 78909306503. The reversal of 78909306481 is 18460390987.

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 78909306481 - 2²⁷ = 78775088753 is a prime.

It is a super-2 number, since 2×78909306481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78909306451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819145 + ... + 910393.

It is an arithmetic number, because the mean of its divisors is an integer number (10011767500).

Almost surely, 2^78909306481 is an apocalyptic number.

It is an amenable number.

78909306481 is a deficient number, since it is larger than the sum of its proper divisors (1184833519).

78909306481 is a wasteful number, since it uses less digits than its factorization.

78909306481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104223.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 78909306481 in words is "seventy-eight billion, nine hundred nine million, three hundred six thousand, four hundred eighty-one".