89651369749 has 2 divisors, whose sum is σ = 89651369750. Its totient is φ = 89651369748.

The previous prime is 89651369723. The next prime is 89651369771. The reversal of 89651369749 is 94796315698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54135328900 + 35516040849 = 232670^2 + 188457^2 .

It is a cyclic number.

It is not a de Polignac number, because 89651369749 - 2¹³ = 89651361557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89651369449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44825684874 + 44825684875.

It is an arithmetic number, because the mean of its divisors is an integer number (44825684875).

Almost surely, 2^89651369749 is an apocalyptic number.

It is an amenable number.

89651369749 is a deficient number, since it is larger than the sum of its proper divisors (1).

89651369749 is an equidigital number, since it uses as much as digits as its factorization.

89651369749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88179840, while the sum is 67.

The spelling of 89651369749 in words is "eighty-nine billion, six hundred fifty-one million, three hundred sixty-nine thousand, seven hundred forty-nine".