1605474906660 has 192 divisors, whose sum is σ = 5103746807040. Its totient is φ = 424124221824.

The previous prime is 1605474906611. The next prime is 1605474906661. The reversal of 1605474906660 is 666094745061.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1605474906597 and 1605474906606.

It is not an unprimeable number, because it can be changed into a prime (1605474906661) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4508662 + ... + 4851698.

It is an arithmetic number, because the mean of its divisors is an integer number (26582014620).

Almost surely, 2^{1605474906660} is an apocalyptic number.

1605474906660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1605474906660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2551873403520).

1605474906660 is an abundant number, since it is smaller than the sum of its proper divisors (3498271900380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1605474906660 is a wasteful number, since it uses less digits than its factorization.

1605474906660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343174 (or 343154 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 1605474906660 in words is "one trillion, six hundred five billion, four hundred seventy-four million, nine hundred six thousand, six hundred sixty".