3435408782921 has 2 divisors, whose sum is σ = 3435408782922. Its totient is φ = 3435408782920.

The previous prime is 3435408782903. The next prime is 3435408782959. The reversal of 3435408782921 is 1292878045343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3300983893321 + 134424889600 = 1816861^2 + 366640^2 .

It is an emirp because it is prime and its reverse (1292878045343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3435408782921 - 2²² = 3435404588617 is a prime.

It is not a weakly prime, because it can be changed into another prime (3435408382921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1717704391460 + 1717704391461.

It is an arithmetic number, because the mean of its divisors is an integer number (1717704391461).

Almost surely, 2^{3435408782921} is an apocalyptic number.

It is an amenable number.

3435408782921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3435408782921 is an equidigital number, since it uses as much as digits as its factorization.

3435408782921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 3435408782921 in words is "three trillion, four hundred thirty-five billion, four hundred eight million, seven hundred eighty-two thousand, nine hundred twenty-one".