75438402212 has 12 divisors (see below), whose sum is σ = 132019216896. Its totient is φ = 37718625960.

The previous prime is 75438402163. The next prime is 75438402227. The reversal of 75438402212 is 21220483457.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311537 + ... + 497927.

It is an arithmetic number, because the mean of its divisors is an integer number (11001601408).

Almost surely, 2^75438402212 is an apocalyptic number.

It is an amenable number.

75438402212 is a deficient number, since it is larger than the sum of its proper divisors (56580814684).

75438402212 is a wasteful number, since it uses less digits than its factorization.

75438402212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287578 (or 287576 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

Adding to 75438402212 its reverse (21220483457), we get a palindrome (96658885669).

The spelling of 75438402212 in words is "seventy-five billion, four hundred thirty-eight million, four hundred two thousand, two hundred twelve".