6411987039571 has 2 divisors, whose sum is σ = 6411987039572. Its totient is φ = 6411987039570.

The previous prime is 6411987039551. The next prime is 6411987039599. The reversal of 6411987039571 is 1759307891146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6411987039571 - 2¹³ = 6411987031379 is a prime.

It is a super-2 number, since 2×6411987039571² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6411987039511) 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, 3205993519785 + 3205993519786.

It is an arithmetic number, because the mean of its divisors is an integer number (3205993519786).

Almost surely, 2^{6411987039571} is an apocalyptic number.

6411987039571 is a deficient number, since it is larger than the sum of its proper divisors (1).

6411987039571 is an equidigital number, since it uses as much as digits as its factorization.

6411987039571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 61.

The spelling of 6411987039571 in words is "six trillion, four hundred eleven billion, nine hundred eighty-seven million, thirty-nine thousand, five hundred seventy-one".