6400540743019 has 2 divisors, whose sum is σ = 6400540743020. Its totient is φ = 6400540743018.

The previous prime is 6400540742993. The next prime is 6400540743031. The reversal of 6400540743019 is 9103470450046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6400540743019 - 2¹⁵ = 6400540710251 is a prime.

It is a super-2 number, since 2×6400540743019² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6400540713019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200270371509 + 3200270371510.

It is an arithmetic number, because the mean of its divisors is an integer number (3200270371510).

Almost surely, 2^{6400540743019} is an apocalyptic number.

6400540743019 is a deficient number, since it is larger than the sum of its proper divisors (1).

6400540743019 is an equidigital number, since it uses as much as digits as its factorization.

6400540743019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 6400540743019 in words is "six trillion, four hundred billion, five hundred forty million, seven hundred forty-three thousand, nineteen".