212645484234 has 24 divisors (see below), whose sum is σ = 465293588292. Its totient is φ = 70180027200.

The previous prime is 212645484211. The next prime is 212645484241. The reversal of 212645484234 is 432484546212.

212645484234 is a `hidden beast` number, since 2 + 1 + 2 + 64 + 548 + 42 + 3 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 149896737225 + 62748747009 = 387165^2 + 250497^2 .

It is a super-2 number, since 2×212645484234² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212645484234.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58481539 + ... + 58485174.

Almost surely, 2^212645484234 is an apocalyptic number.

212645484234 is an abundant number, since it is smaller than the sum of its proper divisors (252648104058).

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

212645484234 is a wasteful number, since it uses less digits than its factorization.

212645484234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116966822 (or 116966819 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 45.

The spelling of 212645484234 in words is "two hundred twelve billion, six hundred forty-five million, four hundred eighty-four thousand, two hundred thirty-four".