502021693493 has 2 divisors, whose sum is σ = 502021693494. Its totient is φ = 502021693492.

The previous prime is 502021693489. The next prime is 502021693507. The reversal of 502021693493 is 394396120205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395561749969 + 106459943524 = 628937^2 + 326282^2 .

It is a cyclic number.

It is not a de Polignac number, because 502021693493 - 2² = 502021693489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (502021693423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251010846746 + 251010846747.

It is an arithmetic number, because the mean of its divisors is an integer number (251010846747).

Almost surely, 2^502021693493 is an apocalyptic number.

It is an amenable number.

502021693493 is a deficient number, since it is larger than the sum of its proper divisors (1).

502021693493 is an equidigital number, since it uses as much as digits as its factorization.

502021693493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 502021693493 in words is "five hundred two billion, twenty-one million, six hundred ninety-three thousand, four hundred ninety-three".