89190952681 has 4 divisors (see below), whose sum is σ = 89446514500. Its totient is φ = 88935390864.

The previous prime is 89190952577. The next prime is 89190952699. The reversal of 89190952681 is 18625909198.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66059280400 + 23131672281 = 257020^2 + 152091^2 .

It is a cyclic number.

It is not a de Polignac number, because 89190952681 - 2¹³ = 89190944489 is a prime.

It is a super-2 number, since 2×89190952681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89190953681) 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 in 3 ways as a sum of consecutive naturals, for example, 127780386 + ... + 127781083.

It is an arithmetic number, because the mean of its divisors is an integer number (22361628625).

Almost surely, 2^89190952681 is an apocalyptic number.

It is an amenable number.

89190952681 is a deficient number, since it is larger than the sum of its proper divisors (255561819).

89190952681 is a wasteful number, since it uses less digits than its factorization.

89190952681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255561818.

The product of its (nonzero) digits is 2799360, while the sum is 58.

The spelling of 89190952681 in words is "eighty-nine billion, one hundred ninety million, nine hundred fifty-two thousand, six hundred eighty-one".