212686366438810 has 96 divisors (see below), whose sum is σ = 424991180630016. Its totient is φ = 76571539017600.

The previous prime is 212686366438787. The next prime is 212686366438817. The reversal of 212686366438810 is 18834663686212.

It is a super-2 number, since 2×212686366438810² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212686366438817) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 214814700 + ... + 215802520.

It is an arithmetic number, because the mean of its divisors is an integer number (4426991464896).

Almost surely, 2^{212686366438810} is an apocalyptic number.

212686366438810 is a deficient number, since it is larger than the sum of its proper divisors (212304814191206).

212686366438810 is a wasteful number, since it uses less digits than its factorization.

212686366438810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989620 (or 989609 counting only the distinct ones).

The product of its (nonzero) digits is 95551488, while the sum is 64.

The spelling of 212686366438810 in words is "two hundred twelve trillion, six hundred eighty-six billion, three hundred sixty-six million, four hundred thirty-eight thousand, eight hundred ten".