1605470447461 has 8 divisors (see below), whose sum is σ = 1611318104064. Its totient is φ = 1599623163600.

The previous prime is 1605470447447. The next prime is 1605470447579. The reversal of 1605470447461 is 1647440745061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1605470447461 - 2⁵ = 1605470447429 is a prime.

It is a super-2 number, since 2×1605470447461² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605470445461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10882356 + ... + 11028898.

It is an arithmetic number, because the mean of its divisors is an integer number (201414763008).

Almost surely, 2^{1605470447461} is an apocalyptic number.

It is an amenable number.

1605470447461 is a deficient number, since it is larger than the sum of its proper divisors (5847656603).

1605470447461 is a wasteful number, since it uses less digits than its factorization.

1605470447461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186371.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 1605470447461 in words is "one trillion, six hundred five billion, four hundred seventy million, four hundred forty-seven thousand, four hundred sixty-one".