3656212531045 has 16 divisors (see below), whose sum is σ = 4520467961712. Its totient is φ = 2837608450560.

The previous prime is 3656212531043. The next prime is 3656212531061. The reversal of 3656212531045 is 5401352126563.

It can be written as a sum of positive squares in 8 ways, for example, as 664578757089 + 2991633773956 = 815217^2 + 1729634^2 .

It is not a de Polignac number, because 3656212531045 - 2¹ = 3656212531043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3656212530992 and 3656212531010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656212531043) 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, 82084462 + ... + 82128991.

It is an arithmetic number, because the mean of its divisors is an integer number (282529247607).

Almost surely, 2^{3656212531045} is an apocalyptic number.

It is an amenable number.

3656212531045 is a deficient number, since it is larger than the sum of its proper divisors (864255430667).

3656212531045 is a wasteful number, since it uses less digits than its factorization.

3656212531045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164213592.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 3656212531045 in words is "three trillion, six hundred fifty-six billion, two hundred twelve million, five hundred thirty-one thousand, forty-five".