3951128791301 has 2 divisors, whose sum is σ = 3951128791302. Its totient is φ = 3951128791300.

The previous prime is 3951128791261. The next prime is 3951128791321. The reversal of 3951128791301 is 1031978211593.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3522562168801 + 428566622500 = 1876849^2 + 654650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3951128791301 is a prime.

It is a super-2 number, since 2×3951128791301² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3951128791301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3951128791321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1975564395650 + 1975564395651.

It is an arithmetic number, because the mean of its divisors is an integer number (1975564395651).

Almost surely, 2^{3951128791301} is an apocalyptic number.

It is an amenable number.

3951128791301 is a deficient number, since it is larger than the sum of its proper divisors (1).

3951128791301 is an equidigital number, since it uses as much as digits as its factorization.

3951128791301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 50.

The spelling of 3951128791301 in words is "three trillion, nine hundred fifty-one billion, one hundred twenty-eight million, seven hundred ninety-one thousand, three hundred one".