1321238686875 has 40 divisors (see below), whose sum is σ = 2202168043152. Its totient is φ = 704401920000.

The previous prime is 1321238686861. The next prime is 1321238686879. The reversal of 1321238686875 is 5786868321231.

It is not a de Polignac number, because 1321238686875 - 2²¹ = 1321236589723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321238686879) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5033895 + ... + 5289855.

Almost surely, 2^{1321238686875} is an apocalyptic number.

1321238686875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1321238686875 is a deficient number, since it is larger than the sum of its proper divisors (880929356277).

1321238686875 is an equidigital number, since it uses as much as digits as its factorization.

1321238686875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258737 (or 258722 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 60.

The spelling of 1321238686875 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-eight million, six hundred eighty-six thousand, eight hundred seventy-five".