211552404104542 has 16 divisors (see below), whose sum is σ = 326301051487392. Its totient is φ = 102792334249440.

The previous prime is 211552404104513. The next prime is 211552404104581. The reversal of 211552404104542 is 245401404255112.

It is a super-2 number, since 2×211552404104542² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211552404104495 and 211552404104504.

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, 1736765509 + ... + 1736887312.

It is an arithmetic number, because the mean of its divisors is an integer number (20393815717962).

Almost surely, 2^{211552404104542} is an apocalyptic number.

211552404104542 is a deficient number, since it is larger than the sum of its proper divisors (114748647382850).

211552404104542 is a wasteful number, since it uses less digits than its factorization.

211552404104542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473653683.

The product of its (nonzero) digits is 256000, while the sum is 40.

Adding to 211552404104542 its reverse (245401404255112), we get a palindrome (456953808359654).

The spelling of 211552404104542 in words is "two hundred eleven trillion, five hundred fifty-two billion, four hundred four million, one hundred four thousand, five hundred forty-two".