213917886868624 has 15 divisors (see below), whose sum is σ = 414466019158963. Its totient is φ = 106958914182448.

The previous prime is 213917886868613. The next prime is 213917886868669. The reversal of 213917886868624 is 426868688719312.

The square root of 213917886868624 is 14625932.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 56675487 + ... + 60331969.

Almost surely, 2^{213917886868624} is an apocalyptic number.

213917886868624 is the 14625932-nd square number.

It is an amenable number.

213917886868624 is a deficient number, since it is larger than the sum of its proper divisors (200548132290339).

213917886868624 is an frugal number, since it uses more digits than its factorization.

213917886868624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7312974 (or 3656485 counting only the distinct ones).

The product of its digits is 2675441664, while the sum is 79.

The spelling of 213917886868624 in words is "two hundred thirteen trillion, nine hundred seventeen billion, eight hundred eighty-six million, eight hundred sixty-eight thousand, six hundred twenty-four".