1605600553231 has 4 divisors (see below), whose sum is σ = 1622153136352. Its totient is φ = 1589047970112.

The previous prime is 1605600553217. The next prime is 1605600553237. The reversal of 1605600553231 is 1323550065061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1605600553231 is a prime.

It is a super-2 number, since 2×1605600553231² (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 (1605600553237) 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 3 ways as a sum of consecutive naturals, for example, 8276291415 + ... + 8276291608.

It is an arithmetic number, because the mean of its divisors is an integer number (405538284088).

Almost surely, 2^{1605600553231} is an apocalyptic number.

1605600553231 is a deficient number, since it is larger than the sum of its proper divisors (16552583121).

1605600553231 is an equidigital number, since it uses as much as digits as its factorization.

1605600553231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16552583120.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 1605600553231 in words is "one trillion, six hundred five billion, six hundred million, five hundred fifty-three thousand, two hundred thirty-one".