8333712358421 has 2 divisors, whose sum is σ = 8333712358422. Its totient is φ = 8333712358420.

The previous prime is 8333712358403. The next prime is 8333712358481. The reversal of 8333712358421 is 1248532173338.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5923937359396 + 2409774999025 = 2433914^2 + 1552345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8333712358421 is a prime.

It is a super-2 number, since 2×8333712358421² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8333712358421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8333712358481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4166856179210 + 4166856179211.

It is an arithmetic number, because the mean of its divisors is an integer number (4166856179211).

Almost surely, 2^{8333712358421} is an apocalyptic number.

It is an amenable number.

8333712358421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8333712358421 is an equidigital number, since it uses as much as digits as its factorization.

8333712358421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 50.

The spelling of 8333712358421 in words is "eight trillion, three hundred thirty-three billion, seven hundred twelve million, three hundred fifty-eight thousand, four hundred twenty-one".