3909410781696 has 960 divisors, whose sum is σ = 13780913203200. Its totient is φ = 1065160212480.

The previous prime is 3909410781673. The next prime is 3909410781707. The reversal of 3909410781696 is 6961870149093.

3909410781696 is a `hidden beast` number, since 3 + 90 + 9 + 410 + 78 + 1 + 69 + 6 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3576770526 + ... + 3576771618.

It is an arithmetic number, because the mean of its divisors is an integer number (14355117920).

Almost surely, 2^{3909410781696} is an apocalyptic number.

3909410781696 is a gapful number since it is divisible by the number (36) 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 3909410781696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6890456601600).

3909410781696 is an abundant number, since it is smaller than the sum of its proper divisors (9871502421504).

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

3909410781696 is a wasteful number, since it uses less digits than its factorization.

3909410781696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242 (or 1209 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 3909410781696 in words is "three trillion, nine hundred nine billion, four hundred ten million, seven hundred eighty-one thousand, six hundred ninety-six".