212478563259 has 10 divisors (see below), whose sum is σ = 317406248940. Its totient is φ = 141652375452.

The previous prime is 212478563201. The next prime is 212478563369. The reversal of 212478563259 is 952365874212.

212478563259 is a `hidden beast` number, since 2 + 1 + 2 + 4 + 78 + 563 + 2 + 5 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-212478563259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212478563159) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1311595989 + ... + 1311596150.

It is an arithmetic number, because the mean of its divisors is an integer number (31740624894).

Almost surely, 2^212478563259 is an apocalyptic number.

212478563259 is a deficient number, since it is larger than the sum of its proper divisors (104927685681).

212478563259 is an equidigital number, since it uses as much as digits as its factorization.

212478563259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623192151 (or 2623192142 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 212478563259 in words is "two hundred twelve billion, four hundred seventy-eight million, five hundred sixty-three thousand, two hundred fifty-nine".