3971141697138 has 64 divisors (see below), whose sum is σ = 9908755384320. Its totient is φ = 1030768732800.

The previous prime is 3971141697137. The next prime is 3971141697169. The reversal of 3971141697138 is 8317961411793.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3971141697137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2217718 + ... + 3586161.

It is an arithmetic number, because the mean of its divisors is an integer number (154824302880).

Almost surely, 2^{3971141697138} is an apocalyptic number.

3971141697138 is an abundant number, since it is smaller than the sum of its proper divisors (5937613687182).

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

3971141697138 is a wasteful number, since it uses less digits than its factorization.

3971141697138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5805383.

The product of its digits is 6858432, while the sum is 60.

The spelling of 3971141697138 in words is "three trillion, nine hundred seventy-one billion, one hundred forty-one million, six hundred ninety-seven thousand, one hundred thirty-eight".