3547370099621 has 2 divisors, whose sum is σ = 3547370099622. Its totient is φ = 3547370099620.

The previous prime is 3547370099597. The next prime is 3547370099633. The reversal of 3547370099621 is 1269900737453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1893612679396 + 1653757420225 = 1376086^2 + 1285985^2 .

It is a cyclic number.

It is not a de Polignac number, because 3547370099621 - 2¹⁴ = 3547370083237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3547370099641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1773685049810 + 1773685049811.

It is an arithmetic number, because the mean of its divisors is an integer number (1773685049811).

Almost surely, 2^{3547370099621} is an apocalyptic number.

It is an amenable number.

3547370099621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3547370099621 is an equidigital number, since it uses as much as digits as its factorization.

3547370099621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8573040, while the sum is 56.

The spelling of 3547370099621 in words is "three trillion, five hundred forty-seven billion, three hundred seventy million, ninety-nine thousand, six hundred twenty-one".