211005543040 has 64 divisors (see below), whose sum is σ = 506296926720. Its totient is φ = 84090700800.

The previous prime is 211005543031. The next prime is 211005543071. The reversal of 211005543040 is 40345500112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 211005542996 and 211005543014.

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, 434856 + ... + 781735.

It is an arithmetic number, because the mean of its divisors is an integer number (7910889480).

Almost surely, 2^211005543040 is an apocalyptic number.

211005543040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211005543040 is an abundant number, since it is smaller than the sum of its proper divisors (295291383680).

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

211005543040 is a wasteful number, since it uses less digits than its factorization.

211005543040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216881 (or 1216869 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 211005543040 in words is "two hundred eleven billion, five million, five hundred forty-three thousand, forty".