212667528645 has 224 divisors, whose sum is σ = 459136387584. Its totient is φ = 93144038400.

The previous prime is 212667528617. The next prime is 212667528677. The reversal of 212667528645 is 546825766212.

212667528645 is a `hidden beast` number, since 2 + 12 + 6 + 67 + 528 + 6 + 45 = 666.

It is not a de Polignac number, because 212667528645 - 2¹⁸ = 212667266501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212667528591 and 212667528600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 24493705 + ... + 24502385.

It is an arithmetic number, because the mean of its divisors is an integer number (2049716016).

Almost surely, 2^212667528645 is an apocalyptic number.

It is an amenable number.

212667528645 is an abundant number, since it is smaller than the sum of its proper divisors (246468858939).

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

212667528645 is a wasteful number, since it uses less digits than its factorization.

212667528645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8775 (or 8760 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 212667528645 in words is "two hundred twelve billion, six hundred sixty-seven million, five hundred twenty-eight thousand, six hundred forty-five".