212354110242545 has 16 divisors (see below), whose sum is σ = 264220802692560. Its totient is φ = 163646432538624.

The previous prime is 212354110242517. The next prime is 212354110242557. The reversal of 212354110242545 is 545242011453212.

212354110242545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 61521496222096 + 150832614020449 = 7843564^2 + 12281393^2 .

It is a cyclic number.

It is not a de Polignac number, because 212354110242545 - 2²⁰ = 212354109193969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1691058584 + ... + 1691184153.

It is an arithmetic number, because the mean of its divisors is an integer number (16513800168285).

Almost surely, 2^{212354110242545} is an apocalyptic number.

It is an amenable number.

212354110242545 is a deficient number, since it is larger than the sum of its proper divisors (51866692450015).

212354110242545 is a wasteful number, since it uses less digits than its factorization.

212354110242545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382243204.

The product of its (nonzero) digits is 384000, while the sum is 41.

Adding to 212354110242545 its reverse (545242011453212), we get a palindrome (757596121695757).

The spelling of 212354110242545 in words is "two hundred twelve trillion, three hundred fifty-four billion, one hundred ten million, two hundred forty-two thousand, five hundred forty-five".