1615706242361 has 2 divisors, whose sum is σ = 1615706242362. Its totient is φ = 1615706242360.

The previous prime is 1615706242351. The next prime is 1615706242363. The reversal of 1615706242361 is 1632426075161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1385564410000 + 230141832361 = 1177100^2 + 479731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1615706242361 is a prime.

It is a super-2 number, since 2×1615706242361² (a number of 25 digits) contains 22 as substring.

Together with 1615706242363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1615706242363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807853121180 + 807853121181.

It is an arithmetic number, because the mean of its divisors is an integer number (807853121181).

Almost surely, 2^{1615706242361} is an apocalyptic number.

It is an amenable number.

1615706242361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615706242361 is an equidigital number, since it uses as much as digits as its factorization.

1615706242361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 1615706242361 in words is "one trillion, six hundred fifteen billion, seven hundred six million, two hundred forty-two thousand, three hundred sixty-one".