73580551020 has 288 divisors, whose sum is σ = 246145536000. Its totient is φ = 17718704640.

The previous prime is 73580551013. The next prime is 73580551021. The reversal of 73580551020 is 2015508537.

73580551020 is a `hidden beast` number, since 7 + 3 + 5 + 80 + 551 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (73580551021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7830525 + ... + 7839915.

It is an arithmetic number, because the mean of its divisors is an integer number (854672000).

Almost surely, 2^73580551020 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 73580551020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123072768000).

73580551020 is an abundant number, since it is smaller than the sum of its proper divisors (172564984980).

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

73580551020 is a wasteful number, since it uses less digits than its factorization.

73580551020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533 (or 9528 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 73580551020 in words is "seventy-three billion, five hundred eighty million, five hundred fifty-one thousand, twenty".