97755590617 has 2 divisors, whose sum is σ = 97755590618. Its totient is φ = 97755590616.

The previous prime is 97755590579. The next prime is 97755590641. The reversal of 97755590617 is 71609555779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70375600656 + 27379989961 = 265284^2 + 165469^2 .

It is a cyclic number.

It is not a de Polignac number, because 97755590617 - 2¹¹ = 97755588569 is a prime.

It is not a weakly prime, because it can be changed into another prime (97755590417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48877795308 + 48877795309.

It is an arithmetic number, because the mean of its divisors is an integer number (48877795309).

Almost surely, 2^97755590617 is an apocalyptic number.

It is an amenable number.

97755590617 is a deficient number, since it is larger than the sum of its proper divisors (1).

97755590617 is an equidigital number, since it uses as much as digits as its factorization.

97755590617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20837250, while the sum is 61.

The spelling of 97755590617 in words is "ninety-seven billion, seven hundred fifty-five million, five hundred ninety thousand, six hundred seventeen".