89968987609021 has 4 divisors (see below), whose sum is σ = 94704197483200. Its totient is φ = 85233777734844.

The previous prime is 89968987608919. The next prime is 89968987609027. The reversal of 89968987609021 is 12090678986998.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89968987609021 - 2¹¹ = 89968987606973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89968987609027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2367604937061 + ... + 2367604937098.

It is an arithmetic number, because the mean of its divisors is an integer number (23676049370800).

Almost surely, 2^{89968987609021} is an apocalyptic number.

It is an amenable number.

89968987609021 is a deficient number, since it is larger than the sum of its proper divisors (4735209874179).

89968987609021 is a wasteful number, since it uses less digits than its factorization.

89968987609021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735209874178.

The product of its (nonzero) digits is 1693052928, while the sum is 82.

The spelling of 89968987609021 in words is "eighty-nine trillion, nine hundred sixty-eight billion, nine hundred eighty-seven million, six hundred nine thousand, twenty-one".