6477935259491 has 2 divisors, whose sum is σ = 6477935259492. Its totient is φ = 6477935259490.

The previous prime is 6477935259457. The next prime is 6477935259533. The reversal of 6477935259491 is 1949525397746.

6477935259491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6477935259491 - 2³⁴ = 6460755390307 is a prime.

It is a super-3 number, since 3×6477935259491³ (a number of 39 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6477935259431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3238967629745 + 3238967629746.

It is an arithmetic number, because the mean of its divisors is an integer number (3238967629746).

Almost surely, 2^{6477935259491} is an apocalyptic number.

6477935259491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6477935259491 is an equidigital number, since it uses as much as digits as its factorization.

6477935259491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 514382400, while the sum is 71.

The spelling of 6477935259491 in words is "six trillion, four hundred seventy-seven billion, nine hundred thirty-five million, two hundred fifty-nine thousand, four hundred ninety-one".