212909442590 has 32 divisors (see below), whose sum is σ = 412741568736. Its totient is φ = 78607992960.

The previous prime is 212909442511. The next prime is 212909442623. The reversal of 212909442590 is 95244909212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2718824 + ... + 2796036.

It is an arithmetic number, because the mean of its divisors is an integer number (12898174023).

Almost surely, 2^212909442590 is an apocalyptic number.

212909442590 is a deficient number, since it is larger than the sum of its proper divisors (199832126146).

212909442590 is a wasteful number, since it uses less digits than its factorization.

212909442590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98444.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 212909442590 in words is "two hundred twelve billion, nine hundred nine million, four hundred forty-two thousand, five hundred ninety".