3475651229621 has 2 divisors, whose sum is σ = 3475651229622. Its totient is φ = 3475651229620.

The previous prime is 3475651229483. The next prime is 3475651229639. The reversal of 3475651229621 is 1269221565743.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3351334342225 + 124316887396 = 1830665^2 + 352586^2 .

It is a cyclic number.

It is not a de Polignac number, because 3475651229621 - 2¹⁰ = 3475651228597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3475651229681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1737825614810 + 1737825614811.

It is an arithmetic number, because the mean of its divisors is an integer number (1737825614811).

Almost surely, 2^{3475651229621} is an apocalyptic number.

It is an amenable number.

3475651229621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3475651229621 is an equidigital number, since it uses as much as digits as its factorization.

3475651229621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 53.

The spelling of 3475651229621 in words is "three trillion, four hundred seventy-five billion, six hundred fifty-one million, two hundred twenty-nine thousand, six hundred twenty-one".