3971068556826 has 128 divisors (see below), whose sum is σ = 9763757752320. Its totient is φ = 1051356894912.

The previous prime is 3971068556813. The next prime is 3971068556837. The reversal of 3971068556826 is 6286558601793.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62340645 + ... + 62404311.

It is an arithmetic number, because the mean of its divisors is an integer number (76279357440).

Almost surely, 2^{3971068556826} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3971068556826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4881878876160).

3971068556826 is an abundant number, since it is smaller than the sum of its proper divisors (5792689195494).

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

3971068556826 is a wasteful number, since it uses less digits than its factorization.

3971068556826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65408.

The product of its (nonzero) digits is 130636800, while the sum is 66.

The spelling of 3971068556826 in words is "three trillion, nine hundred seventy-one billion, sixty-eight million, five hundred fifty-six thousand, eight hundred twenty-six".