353640342437 has 2 divisors, whose sum is σ = 353640342438. Its totient is φ = 353640342436.

The previous prime is 353640342413. The next prime is 353640342491. The reversal of 353640342437 is 734243046353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313690726561 + 39949615876 = 560081^2 + 199874^2 .

It is a cyclic number.

It is not a de Polignac number, because 353640342437 - 2⁶ = 353640342373 is a prime.

It is a super-2 number, since 2×353640342437² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353640348437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176820171218 + 176820171219.

It is an arithmetic number, because the mean of its divisors is an integer number (176820171219).

Almost surely, 2^353640342437 is an apocalyptic number.

It is an amenable number.

353640342437 is a deficient number, since it is larger than the sum of its proper divisors (1).

353640342437 is an equidigital number, since it uses as much as digits as its factorization.

353640342437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 44.

The spelling of 353640342437 in words is "three hundred fifty-three billion, six hundred forty million, three hundred forty-two thousand, four hundred thirty-seven".