3927252388691 has 2 divisors, whose sum is σ = 3927252388692. Its totient is φ = 3927252388690.

The previous prime is 3927252388627. The next prime is 3927252388723. The reversal of 3927252388691 is 1968832527293.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3927252388691 - 2⁶ = 3927252388627 is a prime.

It is a super-2 number, since 2×3927252388691² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3927252385691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1963626194345 + 1963626194346.

It is an arithmetic number, because the mean of its divisors is an integer number (1963626194346).

Almost surely, 2^{3927252388691} is an apocalyptic number.

3927252388691 is a deficient number, since it is larger than the sum of its proper divisors (1).

3927252388691 is an equidigital number, since it uses as much as digits as its factorization.

3927252388691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78382080, while the sum is 65.

The spelling of 3927252388691 in words is "three trillion, nine hundred twenty-seven billion, two hundred fifty-two million, three hundred eighty-eight thousand, six hundred ninety-one".