6499227769057 has 4 divisors (see below), whose sum is σ = 6572252800260. Its totient is φ = 6426202737856.

The previous prime is 6499227769051. The next prime is 6499227769063. The reversal of 6499227769057 is 7509677229946.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6499227769051) and next prime (6499227769063).

It can be written as a sum of positive squares in 2 ways, for example, as 4010150431296 + 2489077337761 = 2002536^2 + 1577681^2 .

It is a cyclic number.

It is not a de Polignac number, because 6499227769057 - 2¹¹ = 6499227767009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6499227769051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36512515468 + ... + 36512515645.

It is an arithmetic number, because the mean of its divisors is an integer number (1643063200065).

Almost surely, 2^{6499227769057} is an apocalyptic number.

It is an amenable number.

6499227769057 is a deficient number, since it is larger than the sum of its proper divisors (73025031203).

6499227769057 is an equidigital number, since it uses as much as digits as its factorization.

6499227769057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73025031202.

The product of its (nonzero) digits is 720135360, while the sum is 73.

The spelling of 6499227769057 in words is "six trillion, four hundred ninety-nine billion, two hundred twenty-seven million, seven hundred sixty-nine thousand, fifty-seven".