212688147847694 has 8 divisors (see below), whose sum is σ = 326451575766360. Its totient is φ = 103870955925576.

The previous prime is 212688147847661. The next prime is 212688147847741. The reversal of 212688147847694 is 496748741886212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212688147847694² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236558999029 + ... + 1236558999200.

It is an arithmetic number, because the mean of its divisors is an integer number (40806446970795).

Almost surely, 2^{212688147847694} is an apocalyptic number.

212688147847694 is a deficient number, since it is larger than the sum of its proper divisors (113763427918666).

212688147847694 is a wasteful number, since it uses less digits than its factorization.

212688147847694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473117998274.

The product of its digits is 2080899072, while the sum is 77.

The spelling of 212688147847694 in words is "two hundred twelve trillion, six hundred eighty-eight billion, one hundred forty-seven million, eight hundred forty-seven thousand, six hundred ninety-four".