211996564626 has 32 divisors (see below), whose sum is σ = 528614811648. Its totient is φ = 55064042640.

The previous prime is 211996564621. The next prime is 211996564673. The reversal of 211996564626 is 626465699112.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (211996564621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229433050 + ... + 229433973.

It is an arithmetic number, because the mean of its divisors is an integer number (16519212864).

Almost surely, 2^211996564626 is an apocalyptic number.

211996564626 is an abundant number, since it is smaller than the sum of its proper divisors (316618247022).

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

211996564626 is a wasteful number, since it uses less digits than its factorization.

211996564626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458867046.

The product of its digits is 8398080, while the sum is 57.

The spelling of 211996564626 in words is "two hundred eleven billion, nine hundred ninety-six million, five hundred sixty-four thousand, six hundred twenty-six".