89390873656 has 128 divisors (see below), whose sum is σ = 206087040000. Its totient is φ = 36234366336.

The previous prime is 89390873653. The next prime is 89390873657. The reversal of 89390873656 is 65637809398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89390873653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46243666 + ... + 46245598.

It is an arithmetic number, because the mean of its divisors is an integer number (1610055000).

Almost surely, 2^89390873656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89390873656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103043520000).

89390873656 is an abundant number, since it is smaller than the sum of its proper divisors (116696166344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89390873656 is a wasteful number, since it uses less digits than its factorization.

89390873656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866 (or 2848 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 64.

The spelling of 89390873656 in words is "eighty-nine billion, three hundred ninety million, eight hundred seventy-three thousand, six hundred fifty-six".