212663230166540 has 48 divisors (see below), whose sum is σ = 448295947784832. Its totient is φ = 84741004382976.

The previous prime is 212663230166533. The next prime is 212663230166591. The reversal of 212663230166540 is 45661032366212.

It is a super-2 number, since 2×212663230166540² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23437997 + ... + 31219643.

It is an arithmetic number, because the mean of its divisors is an integer number (9339498912184).

Almost surely, 2^{212663230166540} is an apocalyptic number.

212663230166540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212663230166540 is an abundant number, since it is smaller than the sum of its proper divisors (235632717618292).

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

212663230166540 is a wasteful number, since it uses less digits than its factorization.

212663230166540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7786866 (or 7786864 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 212663230166540 in words is "two hundred twelve trillion, six hundred sixty-three billion, two hundred thirty million, one hundred sixty-six thousand, five hundred forty".