1605412320730 has 32 divisors (see below), whose sum is σ = 2907098812800. Its totient is φ = 638311296960.

The previous prime is 1605412320691. The next prime is 1605412320737. The reversal of 1605412320730 is 370232145061.

It is not an unprimeable number, because it can be changed into a prime (1605412320737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3587907 + ... + 4010473.

It is an arithmetic number, because the mean of its divisors is an integer number (90846837900).

Almost surely, 2^{1605412320730} is an apocalyptic number.

1605412320730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1605412320730 is a deficient number, since it is larger than the sum of its proper divisors (1301686492070).

1605412320730 is a wasteful number, since it uses less digits than its factorization.

1605412320730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424854.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 1605412320730 its reverse (370232145061), we get a palindrome (1975644465791).

The spelling of 1605412320730 in words is "one trillion, six hundred five billion, four hundred twelve million, three hundred twenty thousand, seven hundred thirty".