73558389872 has 80 divisors (see below), whose sum is σ = 164657532672. Its totient is φ = 31504450560.

The previous prime is 73558389841. The next prime is 73558389899. The reversal of 73558389872 is 27898385537.

It is a super-2 number, since 2×73558389872² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73558389799 and 73558389808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135608 + ... + 406824.

Almost surely, 2^73558389872 is an apocalyptic number.

It is a pronic number, being equal to 271216×271217.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73558389872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82328766336).

73558389872 is an abundant number, since it is smaller than the sum of its proper divisors (91099142800).

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

73558389872 is a wasteful number, since it uses less digits than its factorization.

73558389872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271326 (or 271320 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 65.

The spelling of 73558389872 in words is "seventy-three billion, five hundred fifty-eight million, three hundred eighty-nine thousand, eight hundred seventy-two".