39887084421888 has 144 divisors (see below), whose sum is σ = 115841333865600. Its totient is φ = 12083570851840.

The previous prime is 39887084421881. The next prime is 39887084421893. The reversal of 39887084421888 is 88812448078893.

It is not an unprimeable number, because it can be changed into a prime (39887084421881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29230408 + ... + 30564536.

It is an arithmetic number, because the mean of its divisors is an integer number (804453707400).

Almost surely, 2^{39887084421888} 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 39887084421888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57920666932800).

39887084421888 is an abundant number, since it is smaller than the sum of its proper divisors (75954249443712).

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

39887084421888 is a wasteful number, since it uses less digits than its factorization.

39887084421888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337698 (or 1337684 counting only the distinct ones).

The product of its (nonzero) digits is 1585446912, while the sum is 78.

The spelling of 39887084421888 in words is "thirty-nine trillion, eight hundred eighty-seven billion, eighty-four million, four hundred twenty-one thousand, eight hundred eighty-eight".