216124858413505 has 8 divisors (see below), whose sum is σ = 259356620121192. Its totient is φ = 172895360047488.

The previous prime is 216124858413493. The next prime is 216124858413559. The reversal of 216124858413505 is 505314858421612.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4221870168961 + 211902988244544 = 2054719^2 + 14556888^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 216124858413505 - 2⁷ = 216124858413377 is a prime.

It is a Duffinian 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, 565625332 + ... + 566007301.

It is an arithmetic number, because the mean of its divisors is an integer number (32419577515149).

Almost surely, 2^{216124858413505} is an apocalyptic number.

It is an amenable number.

216124858413505 is a deficient number, since it is larger than the sum of its proper divisors (43231761707687).

216124858413505 is a wasteful number, since it uses less digits than its factorization.

216124858413505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131670835.

The product of its (nonzero) digits is 9216000, while the sum is 55.

The spelling of 216124858413505 in words is "two hundred sixteen trillion, one hundred twenty-four billion, eight hundred fifty-eight million, four hundred thirteen thousand, five hundred five".