212769919394 has 8 divisors (see below), whose sum is σ = 327780686748. Its totient is φ = 103509690480.

The previous prime is 212769919363. The next prime is 212769919399. The reversal of 212769919394 is 493919967212.

It can be written as a sum of positive squares in 2 ways, for example, as 201388230169 + 11381689225 = 448763^2 + 106685^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (212769919399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437634517 + ... + 1437634664.

Almost surely, 2^212769919394 is an apocalyptic number.

212769919394 is a deficient number, since it is larger than the sum of its proper divisors (115010767354).

212769919394 is a wasteful number, since it uses less digits than its factorization.

212769919394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875269220.

The product of its digits is 13226976, while the sum is 62.

The spelling of 212769919394 in words is "two hundred twelve billion, seven hundred sixty-nine million, nine hundred nineteen thousand, three hundred ninety-four".