211043696406 has 16 divisors (see below), whose sum is σ = 422649435648. Its totient is φ = 70254225000.

The previous prime is 211043696399. The next prime is 211043696407. The reversal of 211043696406 is 604696340112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211043696407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23413570 + ... + 23422581.

It is an arithmetic number, because the mean of its divisors is an integer number (26415589728).

Almost surely, 2^211043696406 is an apocalyptic number.

211043696406 is an abundant number, since it is smaller than the sum of its proper divisors (211605739242).

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

211043696406 is a wasteful number, since it uses less digits than its factorization.

211043696406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46836907.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 211043696406 in words is "two hundred eleven billion, forty-three million, six hundred ninety-six thousand, four hundred six".