42906504617 has 2 divisors, whose sum is σ = 42906504618. Its totient is φ = 42906504616.

The previous prime is 42906504533. The next prime is 42906504659. The reversal of 42906504617 is 71640560924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38201093401 + 4705411216 = 195451^2 + 68596^2 .

It is a cyclic number.

It is not a de Polignac number, because 42906504617 - 2¹² = 42906500521 is a prime.

It is not a weakly prime, because it can be changed into another prime (42906504677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21453252308 + 21453252309.

It is an arithmetic number, because the mean of its divisors is an integer number (21453252309).

Almost surely, 2^42906504617 is an apocalyptic number.

It is an amenable number.

42906504617 is a deficient number, since it is larger than the sum of its proper divisors (1).

42906504617 is an equidigital number, since it uses as much as digits as its factorization.

42906504617 is an evil number, because the sum of its binary digits is even.

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

The spelling of 42906504617 in words is "forty-two billion, nine hundred six million, five hundred four thousand, six hundred seventeen".