6486145215557 has 16 divisors (see below), whose sum is σ = 7478141978112. Its totient is φ = 5510622395520.

The previous prime is 6486145215551. The next prime is 6486145215559. The reversal of 6486145215557 is 7555125416846.

It is a cyclic number.

It is not a de Polignac number, because 6486145215557 - 2⁴ = 6486145215541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6486145215496 and 6486145215505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6486145215551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4482173 + ... + 5749970.

It is an arithmetic number, because the mean of its divisors is an integer number (467383873632).

Almost surely, 2^{6486145215557} is an apocalyptic number.

It is an amenable number.

6486145215557 is a deficient number, since it is larger than the sum of its proper divisors (991996762555).

6486145215557 is a wasteful number, since it uses less digits than its factorization.

6486145215557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10232948.

The product of its digits is 40320000, while the sum is 59.

The spelling of 6486145215557 in words is "six trillion, four hundred eighty-six billion, one hundred forty-five million, two hundred fifteen thousand, five hundred fifty-seven".