89515051920 has 240 divisors, whose sum is σ = 354650729472. Its totient is φ = 19800529920.

The previous prime is 89515051919. The next prime is 89515051921. The reversal of 89515051920 is 2915051598.

89515051920 is a `hidden beast` number, since 8 + 9 + 51 + 505 + 1 + 92 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (89515051919) and next prime (89515051921).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (89515051921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130227 + ... + 442706.

Almost surely, 2^89515051920 is an apocalyptic number.

89515051920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89515051920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177325364736).

89515051920 is an abundant number, since it is smaller than the sum of its proper divisors (265135677552).

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

89515051920 is a wasteful number, since it uses less digits than its factorization.

89515051920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572990 (or 572981 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 45.

The spelling of 89515051920 in words is "eighty-nine billion, five hundred fifteen million, fifty-one thousand, nine hundred twenty".