1596106821645 has 36 divisors (see below), whose sum is σ = 3218272534620. Its totient is φ = 729648831744.

The previous prime is 1596106821619. The next prime is 1596106821649. The reversal of 1596106821645 is 5461286016951.

It is a happy number.

1596106821645 is a `hidden beast` number, since 1 + 5 + 9 + 610 + 6 + 8 + 2 + 16 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 992410455204 + 603696366441 = 996198^2 + 776979^2 .

It is not a de Polignac number, because 1596106821645 - 2⁵ = 1596106821613 is a prime.

It is a super-3 number, since 3×1596106821645³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1596106821591 and 1596106821600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1596106821649) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 361926780 + ... + 361931189.

It is an arithmetic number, because the mean of its divisors is an integer number (89396459295).

Almost surely, 2^{1596106821645} is an apocalyptic number.

1596106821645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1596106821645 is an abundant number, since it is smaller than the sum of its proper divisors (1622165712975).

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

1596106821645 is a wasteful number, since it uses less digits than its factorization.

1596106821645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723857994 (or 723857984 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 1596106821645 in words is "one trillion, five hundred ninety-six billion, one hundred six million, eight hundred twenty-one thousand, six hundred forty-five".