39681050481660 has 384 divisors, whose sum is σ = 139502451916800. Its totient is φ = 8217315025920.

The previous prime is 39681050481647. The next prime is 39681050481661. The reversal of 39681050481660 is 6618405018693.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 39681050481660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39681050481661) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1026152806 + ... + 1026191474.

It is an arithmetic number, because the mean of its divisors is an integer number (363287635200).

Almost surely, 2^{39681050481660} is an apocalyptic number.

39681050481660 is a gapful number since it is divisible by the number (30) 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 39681050481660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69751225958400).

39681050481660 is an abundant number, since it is smaller than the sum of its proper divisors (99821401435140).

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

39681050481660 is a wasteful number, since it uses less digits than its factorization.

39681050481660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44321 (or 44319 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 39681050481660 in words is "thirty-nine trillion, six hundred eighty-one billion, fifty million, four hundred eighty-one thousand, six hundred sixty".