212345205492 has 96 divisors (see below), whose sum is σ = 568940101632. Its totient is φ = 60382941696.

The previous prime is 212345205491. The next prime is 212345205503. The reversal of 212345205492 is 294502543212.

It is a self number, because there is not a number n which added to its sum of digits gives 212345205492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212345205491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15660988 + ... + 15674540.

It is an arithmetic number, because the mean of its divisors is an integer number (5926459392).

Almost surely, 2^212345205492 is an apocalyptic number.

It is an amenable number.

212345205492 is an abundant number, since it is smaller than the sum of its proper divisors (356594896140).

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

212345205492 is a wasteful number, since it uses less digits than its factorization.

212345205492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14437 (or 14435 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 212345205492 in words is "two hundred twelve billion, three hundred forty-five million, two hundred five thousand, four hundred ninety-two".