3774410020621 has 2 divisors, whose sum is σ = 3774410020622. Its totient is φ = 3774410020620.

The previous prime is 3774410020597. The next prime is 3774410020657. The reversal of 3774410020621 is 1260200144773.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3745440278596 + 28969742025 = 1935314^2 + 170205^2 .

It is a cyclic number.

It is not a de Polignac number, because 3774410020621 - 2¹¹ = 3774410018573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3774410420621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1887205010310 + 1887205010311.

It is an arithmetic number, because the mean of its divisors is an integer number (1887205010311).

Almost surely, 2^{3774410020621} is an apocalyptic number.

It is an amenable number.

3774410020621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3774410020621 is an equidigital number, since it uses as much as digits as its factorization.

3774410020621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 3774410020621 in words is "three trillion, seven hundred seventy-four billion, four hundred ten million, twenty thousand, six hundred twenty-one".