211535420421416 has 32 divisors (see below), whose sum is σ = 488158662512640. Its totient is φ = 83684342144448.

The previous prime is 211535420421401. The next prime is 211535420421419. The reversal of 211535420421416 is 614124024535112.

211535420421416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (211535420421419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145285315496 + ... + 145285316951.

It is an arithmetic number, because the mean of its divisors is an integer number (15254958203520).

Almost surely, 2^{211535420421416} is an apocalyptic number.

211535420421416 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

211535420421416 is an abundant number, since it is smaller than the sum of its proper divisors (276623242091224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211535420421416 is a wasteful number, since it uses less digits than its factorization.

211535420421416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290570632473 (or 290570632469 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

Adding to 211535420421416 its reverse (614124024535112), we get a palindrome (825659444956528).

The spelling of 211535420421416 in words is "two hundred eleven trillion, five hundred thirty-five billion, four hundred twenty million, four hundred twenty-one thousand, four hundred sixteen".