6505155019 has 4 divisors (see below), whose sum is σ = 7096532760. Its totient is φ = 5913777280.

The previous prime is 6505154993. The next prime is 6505155029. The reversal of 6505155019 is 9105515056.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6505155019 - 2⁷ = 6505154891 is a prime.

It is a super-2 number, since 2×6505155019² = 84634083642441780722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6505155029) 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, 295688854 + ... + 295688875.

It is an arithmetic number, because the mean of its divisors is an integer number (1774133190).

Almost surely, 2^6505155019 is an apocalyptic number.

6505155019 is a deficient number, since it is larger than the sum of its proper divisors (591377741).

6505155019 is a wasteful number, since it uses less digits than its factorization.

6505155019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591377740.

The product of its (nonzero) digits is 33750, while the sum is 37.

The square root of 6505155019 is about 80654.5412174665. The cubic root of 6505155019 is about 1866.7488112696.

The spelling of 6505155019 in words is "six billion, five hundred five million, one hundred fifty-five thousand, nineteen".