219856948911 has 12 divisors (see below), whose sum is σ = 317592897960. Its totient is φ = 146561261040.

The previous prime is 219856948901. The next prime is 219856948919. The reversal of 219856948911 is 119849658912.

219856948911 is a `hidden beast` number, since 2 + 1 + 9 + 85 + 69 + 489 + 11 = 666.

It is not a de Polignac number, because 219856948911 - 2⁵ = 219856948879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219856948919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 696576 + ... + 961733.

It is an arithmetic number, because the mean of its divisors is an integer number (26466074830).

Almost surely, 2^219856948911 is an apocalyptic number.

219856948911 is a deficient number, since it is larger than the sum of its proper divisors (97735949049).

219856948911 is a wasteful number, since it uses less digits than its factorization.

219856948911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673046 (or 1673043 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 63.

The spelling of 219856948911 in words is "two hundred nineteen billion, eight hundred fifty-six million, nine hundred forty-eight thousand, nine hundred eleven".