39378481511 has 2 divisors, whose sum is σ = 39378481512. Its totient is φ = 39378481510.

The previous prime is 39378481487. The next prime is 39378481531. The reversal of 39378481511 is 11518487393.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39378481511 - 2¹⁰ = 39378480487 is a prime.

It is a super-2 number, since 2×39378481511² (a number of 22 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 39378481511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39378481531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19689240755 + 19689240756.

It is an arithmetic number, because the mean of its divisors is an integer number (19689240756).

Almost surely, 2^39378481511 is an apocalyptic number.

39378481511 is a deficient number, since it is larger than the sum of its proper divisors (1).

39378481511 is an equidigital number, since it uses as much as digits as its factorization.

39378481511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The spelling of 39378481511 in words is "thirty-nine billion, three hundred seventy-eight million, four hundred eighty-one thousand, five hundred eleven".