211948487383680 has 192 divisors, whose sum is σ = 735973364973600. Its totient is φ = 56203844425728.

The previous prime is 211948487383649. The next prime is 211948487383691. The reversal of 211948487383680 is 86383784849112.

It is a happy number.

211948487383680 is a `hidden beast` number, since 2 + 1 + 1 + 9 + 4 + 8 + 487 + 3 + 83 + 68 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×211948487383680² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 211948487383599 and 211948487383608.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101752794 + ... + 103814873.

Almost surely, 2^{211948487383680} is an apocalyptic number.

211948487383680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211948487383680 is an abundant number, since it is smaller than the sum of its proper divisors (524024877589920).

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

211948487383680 is a wasteful number, since it uses less digits than its factorization.

211948487383680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205567871 (or 205567856 counting only the distinct ones).

The product of its (nonzero) digits is 445906944, while the sum is 72.

The spelling of 211948487383680 in words is "two hundred eleven trillion, nine hundred forty-eight billion, four hundred eighty-seven million, three hundred eighty-three thousand, six hundred eighty".