89619693481 has 2 divisors, whose sum is σ = 89619693482. Its totient is φ = 89619693480.

The previous prime is 89619693467. The next prime is 89619693521. The reversal of 89619693481 is 18439691698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81144649881 + 8475043600 = 284859^2 + 92060^2 .

It is a cyclic number.

It is not a de Polignac number, because 89619693481 - 2³³ = 81029758889 is a prime.

It is a super-2 number, since 2×89619693481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89619693451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44809846740 + 44809846741.

It is an arithmetic number, because the mean of its divisors is an integer number (44809846741).

Almost surely, 2^89619693481 is an apocalyptic number.

It is an amenable number.

89619693481 is a deficient number, since it is larger than the sum of its proper divisors (1).

89619693481 is an equidigital number, since it uses as much as digits as its factorization.

89619693481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20155392, while the sum is 64.

The spelling of 89619693481 in words is "eighty-nine billion, six hundred nineteen million, six hundred ninety-three thousand, four hundred eighty-one".