212769539664 has 80 divisors (see below), whose sum is σ = 602730393024. Its totient is φ = 64141516800.

The previous prime is 212769539651. The next prime is 212769539669. The reversal of 212769539664 is 466935967212.

212769539664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 212769539598 and 212769539607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212769539669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942067 + ... + 1145874.

Almost surely, 2^212769539664 is an apocalyptic number.

212769539664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212769539664 is an abundant number, since it is smaller than the sum of its proper divisors (389960853360).

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

212769539664 is a wasteful number, since it uses less digits than its factorization.

212769539664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088156 (or 2088150 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 60.

The spelling of 212769539664 in words is "two hundred twelve billion, seven hundred sixty-nine million, five hundred thirty-nine thousand, six hundred sixty-four".