1605422353451 has 6 divisors (see below), whose sum is σ = 1867532125500. Its totient is φ = 1376076302916.

The previous prime is 1605422353427. The next prime is 1605422353489. The reversal of 1605422353451 is 1543532245061.

It is not a de Polignac number, because 1605422353451 - 2²⁶ = 1605355244587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1605422353399 and 1605422353408.

It is not an unprimeable number, because it can be changed into a prime (1605422353351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16381860701 + ... + 16381860798.

It is an arithmetic number, because the mean of its divisors is an integer number (311255354250).

Almost surely, 2^{1605422353451} is an apocalyptic number.

1605422353451 is a deficient number, since it is larger than the sum of its proper divisors (262109772049).

1605422353451 is an equidigital number, since it uses as much as digits as its factorization.

1605422353451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32763721513 (or 32763721506 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 1605422353451 in words is "one trillion, six hundred five billion, four hundred twenty-two million, three hundred fifty-three thousand, four hundred fifty-one".