94394680721 has 16 divisors (see below), whose sum is σ = 103225183488. Its totient is φ = 85605949200.

The previous prime is 94394680717. The next prime is 94394680727. The reversal of 94394680721 is 12708649349.

It is a cyclic number.

It is not a de Polignac number, because 94394680721 - 2² = 94394680717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94394680727) 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 15 ways as a sum of consecutive naturals, for example, 9239306 + ... + 9249516.

It is an arithmetic number, because the mean of its divisors is an integer number (6451573968).

Almost surely, 2^94394680721 is an apocalyptic number.

It is an amenable number.

94394680721 is a deficient number, since it is larger than the sum of its proper divisors (8830502767).

94394680721 is a wasteful number, since it uses less digits than its factorization.

94394680721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12172.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 94394680721 in words is "ninety-four billion, three hundred ninety-four million, six hundred eighty thousand, seven hundred twenty-one".