39555004992 has 112 divisors (see below), whose sum is σ = 110660444160. Its totient is φ = 12434784768.

The previous prime is 39555004961. The next prime is 39555005023. The reversal of 39555004992 is 29940055593.

It is an interprime number because it is at equal distance from previous prime (39555004961) and next prime (39555005023).

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, 789193 + ... + 837815.

It is an arithmetic number, because the mean of its divisors is an integer number (988039680).

Almost surely, 2^39555004992 is an apocalyptic number.

39555004992 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 39555004992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55330222080).

39555004992 is an abundant number, since it is smaller than the sum of its proper divisors (71105439168).

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

39555004992 is a wasteful number, since it uses less digits than its factorization.

39555004992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48880 (or 48870 counting only the distinct ones).

The product of its (nonzero) digits is 2187000, while the sum is 51.

The spelling of 39555004992 in words is "thirty-nine billion, five hundred fifty-five million, four thousand, nine hundred ninety-two".