3303940487621 has 2 divisors, whose sum is σ = 3303940487622. Its totient is φ = 3303940487620.

The previous prime is 3303940487611. The next prime is 3303940487663. The reversal of 3303940487621 is 1267840493033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2295149250625 + 1008791236996 = 1514975^2 + 1004386^2 .

It is a cyclic number.

It is not a de Polignac number, because 3303940487621 - 2⁶ = 3303940487557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3303940487621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3303940487611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1651970243810 + 1651970243811.

It is an arithmetic number, because the mean of its divisors is an integer number (1651970243811).

Almost surely, 2^{3303940487621} is an apocalyptic number.

It is an amenable number.

3303940487621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3303940487621 is an equidigital number, since it uses as much as digits as its factorization.

3303940487621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 3303940487621 in words is "three trillion, three hundred three billion, nine hundred forty million, four hundred eighty-seven thousand, six hundred twenty-one".