2161355302052 has 12 divisors (see below), whose sum is σ = 3844377873756. Its totient is φ = 1062961623840.

The previous prime is 2161355302039. The next prime is 2161355302063. The reversal of 2161355302052 is 2502035531612.

It can be written as a sum of positive squares in 2 ways, for example, as 1274153318656 + 887201983396 = 1128784^2 + 941914^2 .

It is a super-3 number, since 3×2161355302052³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4429006523 + ... + 4429007010.

It is an arithmetic number, because the mean of its divisors is an integer number (320364822813).

Almost surely, 2^{2161355302052} is an apocalyptic number.

It is an amenable number.

2161355302052 is a deficient number, since it is larger than the sum of its proper divisors (1683022571704).

2161355302052 is a wasteful number, since it uses less digits than its factorization.

2161355302052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8858013598 (or 8858013596 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 2161355302052 in words is "two trillion, one hundred sixty-one billion, three hundred fifty-five million, three hundred two thousand, fifty-two".