1213350975428 has 48 divisors (see below), whose sum is σ = 2236851542016. Its totient is φ = 574780631040.

The previous prime is 1213350975409. The next prime is 1213350975491. The reversal of 1213350975428 is 8245790533121.

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, 3946100 + ... + 4242452.

It is an arithmetic number, because the mean of its divisors is an integer number (46601073792).

Almost surely, 2^{1213350975428} is an apocalyptic number.

It is an amenable number.

1213350975428 is a deficient number, since it is larger than the sum of its proper divisors (1023500566588).

1213350975428 is a wasteful number, since it uses less digits than its factorization.

1213350975428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296804 (or 296802 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 1213350975428 in words is "one trillion, two hundred thirteen billion, three hundred fifty million, nine hundred seventy-five thousand, four hundred twenty-eight".