39520055552 has 72 divisors (see below), whose sum is σ = 80868264120. Its totient is φ = 19269550080.

The previous prime is 39520055551. The next prime is 39520055569. The reversal of 39520055552 is 25555002593.

It can be written as a sum of positive squares in 4 ways, for example, as 3200843776 + 36319211776 = 56576^2 + 190576^2 .

It is not an unprimeable number, because it can be changed into a prime (39520055551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1651352 + ... + 1675112.

It is an arithmetic number, because the mean of its divisors is an integer number (1123170335).

Almost surely, 2^39520055552 is an apocalyptic number.

39520055552 is a gapful number since it is divisible by the number (32) 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 39520055552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40434132060).

39520055552 is an abundant number, since it is smaller than the sum of its proper divisors (41348208568).

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

39520055552 is an equidigital number, since it uses as much as digits as its factorization.

39520055552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23939 (or 23925 counting only the distinct ones).

The product of its (nonzero) digits is 337500, while the sum is 41.

The spelling of 39520055552 in words is "thirty-nine billion, five hundred twenty million, fifty-five thousand, five hundred fifty-two".