3400020444521 has 2 divisors, whose sum is σ = 3400020444522. Its totient is φ = 3400020444520.

The previous prime is 3400020444461. The next prime is 3400020444529. The reversal of 3400020444521 is 1254440200043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2130837948121 + 1269182496400 = 1459739^2 + 1126580^2 .

It is an emirp because it is prime and its reverse (1254440200043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3400020444521 - 2³⁸ = 3125142537577 is a prime.

It is not a weakly prime, because it can be changed into another prime (3400020444529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1700010222260 + 1700010222261.

It is an arithmetic number, because the mean of its divisors is an integer number (1700010222261).

Almost surely, 2^{3400020444521} is an apocalyptic number.

It is an amenable number.

3400020444521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3400020444521 is an equidigital number, since it uses as much as digits as its factorization.

3400020444521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 3400020444521 its reverse (1254440200043), we get a palindrome (4654460644564).

The spelling of 3400020444521 in words is "three trillion, four hundred billion, twenty million, four hundred forty-four thousand, five hundred twenty-one".