40213051543145 has 32 divisors (see below), whose sum is σ = 55028777987232. Its totient is φ = 27946835914752.

The previous prime is 40213051543087. The next prime is 40213051543183. The reversal of 40213051543145 is 54134515031204.

It can be written as a sum of positive squares in 16 ways, for example, as 82701681241 + 40130349861904 = 287579^2 + 6334852^2 .

It is a cyclic number.

It is not a de Polignac number, because 40213051543145 - 2¹⁰ = 40213051542121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40213051543099 and 40213051543108.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13078019 + ... + 15857511.

It is an arithmetic number, because the mean of its divisors is an integer number (1719649312101).

Almost surely, 2^{40213051543145} is an apocalyptic number.

It is an amenable number.

40213051543145 is a deficient number, since it is larger than the sum of its proper divisors (14815726444087).

40213051543145 is a wasteful number, since it uses less digits than its factorization.

40213051543145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792621.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 40213051543145 its reverse (54134515031204), we get a palindrome (94347566574349).

The spelling of 40213051543145 in words is "forty trillion, two hundred thirteen billion, fifty-one million, five hundred forty-three thousand, one hundred forty-five".