219968732126 has 96 divisors (see below), whose sum is σ = 405385404480. Its totient is φ = 88815767040.

The previous prime is 219968732089. The next prime is 219968732141. The reversal of 219968732126 is 621237869912.

It is a super-2 number, since 2×219968732126² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 28552391 + ... + 28560093.

It is an arithmetic number, because the mean of its divisors is an integer number (4222764630).

Almost surely, 2^219968732126 is an apocalyptic number.

219968732126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

219968732126 is a deficient number, since it is larger than the sum of its proper divisors (185416672354).

219968732126 is a wasteful number, since it uses less digits than its factorization.

219968732126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8082 (or 8071 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 56.

The spelling of 219968732126 in words is "two hundred nineteen billion, nine hundred sixty-eight million, seven hundred thirty-two thousand, one hundred twenty-six".