89109770661 has 24 divisors (see below), whose sum is σ = 132952601600. Its totient is φ = 57452781600.

The previous prime is 89109770639. The next prime is 89109770669. The reversal of 89109770661 is 16607790198.

It is not a de Polignac number, because 89109770661 - 2⁹ = 89109770149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89109770598 and 89109770607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89109770669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329076 + ... + 535266.

Almost surely, 2^89109770661 is an apocalyptic number.

It is an amenable number.

89109770661 is a deficient number, since it is larger than the sum of its proper divisors (43842830939).

89109770661 is a wasteful number, since it uses less digits than its factorization.

89109770661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207777 (or 207774 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The spelling of 89109770661 in words is "eighty-nine billion, one hundred nine million, seven hundred seventy thousand, six hundred sixty-one".