3988785997213 has 2 divisors, whose sum is σ = 3988785997214. Its totient is φ = 3988785997212.

The previous prime is 3988785997159. The next prime is 3988785997219. The reversal of 3988785997213 is 3127995878893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3477020314329 + 511765682884 = 1864677^2 + 715378^2 .

It is a cyclic number.

It is not a de Polignac number, because 3988785997213 - 2²⁵ = 3988752442781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3988785997219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994392998606 + 1994392998607.

It is an arithmetic number, because the mean of its divisors is an integer number (1994392998607).

Almost surely, 2^{3988785997213} is an apocalyptic number.

It is an amenable number.

3988785997213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3988785997213 is an equidigital number, since it uses as much as digits as its factorization.

3988785997213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1646023680, while the sum is 79.

The spelling of 3988785997213 in words is "three trillion, nine hundred eighty-eight billion, seven hundred eighty-five million, nine hundred ninety-seven thousand, two hundred thirteen".