3981569137560 has 96 divisors (see below), whose sum is σ = 14788685377440. Its totient is φ = 910072945152.

The previous prime is 3981569137459. The next prime is 3981569137561. The reversal of 3981569137560 is 657319651893.

3981569137560 is a `hidden beast` number, since 3 + 9 + 8 + 1 + 5 + 69 + 1 + 3 + 7 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981569137561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 789991357 + ... + 789996396.

It is an arithmetic number, because the mean of its divisors is an integer number (154048806015).

Almost surely, 2^{3981569137560} is an apocalyptic number.

3981569137560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3981569137560 is an abundant number, since it is smaller than the sum of its proper divisors (10807116239880).

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

3981569137560 is a wasteful number, since it uses less digits than its factorization.

3981569137560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579987777 (or 1579987770 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 3981569137560 in words is "three trillion, nine hundred eighty-one billion, five hundred sixty-nine million, one hundred thirty-seven thousand, five hundred sixty".