3447316500021 has 6 divisors (see below), whose sum is σ = 4979457166710. Its totient is φ = 2298211000008.

The previous prime is 3447316500007. The next prime is 3447316500037. The reversal of 3447316500021 is 1200056137443.

3447316500021 is a `hidden beast` number, since 3 + 4 + 473 + 165 + 0 + 0 + 0 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2272899972996 + 1174416527025 = 1507614^2 + 1083705^2 .

It is not a de Polignac number, because 3447316500021 - 2¹¹ = 3447316497973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3447316500721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 191517583326 + ... + 191517583343.

It is an arithmetic number, because the mean of its divisors is an integer number (829909527785).

Almost surely, 2^{3447316500021} is an apocalyptic number.

It is an amenable number.

3447316500021 is a deficient number, since it is larger than the sum of its proper divisors (1532140666689).

3447316500021 is a wasteful number, since it uses less digits than its factorization.

3447316500021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383035166675 (or 383035166672 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 3447316500021 in words is "three trillion, four hundred forty-seven billion, three hundred sixteen million, five hundred thousand, twenty-one".