89525537920 has 128 divisors (see below), whose sum is σ = 263411850240. Its totient is φ = 28333338624.

The previous prime is 89525537917. The next prime is 89525537951. The reversal of 89525537920 is 2973552598.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 710352 + ... + 826831.

It is an arithmetic number, because the mean of its divisors is an integer number (2057905080).

Almost surely, 2^89525537920 is an apocalyptic number.

89525537920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89525537920 is an abundant number, since it is smaller than the sum of its proper divisors (173886312320).

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

89525537920 is a wasteful number, since it uses less digits than its factorization.

89525537920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537222 (or 1537210 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 89525537920 in words is "eighty-nine billion, five hundred twenty-five million, five hundred thirty-seven thousand, nine hundred twenty".