39880587648 has 128 divisors (see below), whose sum is σ = 115698844800. Its totient is φ = 12070830080.

The previous prime is 39880587631. The next prime is 39880587667. The reversal of 39880587648 is 84678508893.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×39880587648² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3919015 + ... + 3929177.

It is an arithmetic number, because the mean of its divisors is an integer number (903897225).

Almost surely, 2^39880587648 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 39880587648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57849422400).

39880587648 is an abundant number, since it is smaller than the sum of its proper divisors (75818257152).

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

39880587648 is a wasteful number, since it uses less digits than its factorization.

39880587648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11120 (or 11108 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 66.

The spelling of 39880587648 in words is "thirty-nine billion, eight hundred eighty million, five hundred eighty-seven thousand, six hundred forty-eight".