408005366776853 has 2 divisors, whose sum is σ = 408005366776854. Its totient is φ = 408005366776852.

The previous prime is 408005366776849. The next prime is 408005366776867. The reversal of 408005366776853 is 358677663500804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407665456788529 + 339909988324 = 20190727^2 + 583018^2 .

It is a cyclic number.

It is not a de Polignac number, because 408005366776853 - 2² = 408005366776849 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408005366776253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204002683388426 + 204002683388427.

It is an arithmetic number, because the mean of its divisors is an integer number (204002683388427).

Almost surely, 2^{408005366776853} is an apocalyptic number.

It is an amenable number.

408005366776853 is a deficient number, since it is larger than the sum of its proper divisors (1).

408005366776853 is an equidigital number, since it uses as much as digits as its factorization.

408005366776853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 609638400, while the sum is 68.

The spelling of 408005366776853 in words is "four hundred eight trillion, five billion, three hundred sixty-six million, seven hundred seventy-six thousand, eight hundred fifty-three".