78946353021 has 8 divisors (see below), whose sum is σ = 105671384064. Its totient is φ = 52426112000.

The previous prime is 78946353011. The next prime is 78946353037. The reversal of 78946353021 is 12035364987.

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 78946353021 - 2²⁷ = 78812135293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78946353001) 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, 51196605 + ... + 51198146.

It is an arithmetic number, because the mean of its divisors is an integer number (13208923008).

It is a 1-persistent number, because it is pandigital, but 2⋅78946353021 = 157892706042 is not.

Almost surely, 2^78946353021 is an apocalyptic number.

It is an amenable number.

78946353021 is a deficient number, since it is larger than the sum of its proper divisors (26725031043).

78946353021 is a wasteful number, since it uses less digits than its factorization.

78946353021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102395011.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 78946353021 in words is "seventy-eight billion, nine hundred forty-six million, three hundred fifty-three thousand, twenty-one".