88109358509 has 2 divisors, whose sum is σ = 88109358510. Its totient is φ = 88109358508.

The previous prime is 88109358461. The next prime is 88109358517. The reversal of 88109358509 is 90585390188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56373004900 + 31736353609 = 237430^2 + 178147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88109358509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88109358529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44054679254 + 44054679255.

It is an arithmetic number, because the mean of its divisors is an integer number (44054679255).

Almost surely, 2^88109358509 is an apocalyptic number.

It is an amenable number.

88109358509 is a deficient number, since it is larger than the sum of its proper divisors (1).

88109358509 is an equidigital number, since it uses as much as digits as its factorization.

88109358509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 56.

The spelling of 88109358509 in words is "eighty-eight billion, one hundred nine million, three hundred fifty-eight thousand, five hundred nine".