1615026940117 has 2 divisors, whose sum is σ = 1615026940118. Its totient is φ = 1615026940116.

The previous prime is 1615026940027. The next prime is 1615026940123. The reversal of 1615026940117 is 7110496205161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1494374222916 + 120652717201 = 1222446^2 + 347351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1615026940117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1615026940817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807513470058 + 807513470059.

It is an arithmetic number, because the mean of its divisors is an integer number (807513470059).

Almost surely, 2^{1615026940117} is an apocalyptic number.

It is an amenable number.

1615026940117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615026940117 is an equidigital number, since it uses as much as digits as its factorization.

1615026940117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 1615026940117 in words is "one trillion, six hundred fifteen billion, twenty-six million, nine hundred forty thousand, one hundred seventeen".