3516241057781 has 2 divisors, whose sum is σ = 3516241057782. Its totient is φ = 3516241057780.

The previous prime is 3516241057741. The next prime is 3516241057783. The reversal of 3516241057781 is 1877501426153.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3397260903556 + 118980154225 = 1843166^2 + 344935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3516241057781 is a prime.

It is a super-2 number, since 2×3516241057781² (a number of 26 digits) contains 22 as substring.

Together with 3516241057783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3516241057783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1758120528890 + 1758120528891.

It is an arithmetic number, because the mean of its divisors is an integer number (1758120528891).

Almost surely, 2^{3516241057781} is an apocalyptic number.

It is an amenable number.

3516241057781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3516241057781 is an equidigital number, since it uses as much as digits as its factorization.

3516241057781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 3516241057781 in words is "three trillion, five hundred sixteen billion, two hundred forty-one million, fifty-seven thousand, seven hundred eighty-one".