89129832978550 has 48 divisors (see below), whose sum is σ = 204038756121312. Its totient is φ = 28208122963200.

The previous prime is 89129832978521. The next prime is 89129832978559. The reversal of 89129832978550 is 5587923892198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89129832978559) 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, 9794482591 + ... + 9794491690.

It is an arithmetic number, because the mean of its divisors is an integer number (4250807419194).

Almost surely, 2^{89129832978550} is an apocalyptic number.

89129832978550 is an abundant number, since it is smaller than the sum of its proper divisors (114908923142762).

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

89129832978550 is a wasteful number, since it uses less digits than its factorization.

89129832978550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19588974313 (or 19588974308 counting only the distinct ones).

The product of its (nonzero) digits is 783820800, while the sum is 76.

The spelling of 89129832978550 in words is "eighty-nine trillion, one hundred twenty-nine billion, eight hundred thirty-two million, nine hundred seventy-eight thousand, five hundred fifty".