212542523005 has 8 divisors (see below), whose sum is σ = 255123076824. Its totient is φ = 169985985600.

The previous prime is 212542522991. The next prime is 212542523029. The reversal of 212542523005 is 500325245212.

It can be written as a sum of positive squares in 4 ways, for example, as 668274201 + 211874248804 = 25851^2 + 460298^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212542523005 - 2¹³ = 212542514813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5984626 + ... + 6020035.

It is an arithmetic number, because the mean of its divisors is an integer number (31890384603).

Almost surely, 2^212542523005 is an apocalyptic number.

It is an amenable number.

212542523005 is a deficient number, since it is larger than the sum of its proper divisors (42580553819).

212542523005 is a wasteful number, since it uses less digits than its factorization.

212542523005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12008207.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 212542523005 its reverse (500325245212), we get a palindrome (712867768217).

The spelling of 212542523005 in words is "two hundred twelve billion, five hundred forty-two million, five hundred twenty-three thousand, five".