6455919457 has 4 divisors (see below), whose sum is σ = 6952528660. Its totient is φ = 5959310256.

The previous prime is 6455919443. The next prime is 6455919461. The reversal of 6455919457 is 7549195546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7549195546 = 2 ⋅3774597773.

It can be written as a sum of positive squares in 2 ways, for example, as 2937531601 + 3518387856 = 54199^2 + 59316^2 .

It is a cyclic number.

It is not a de Polignac number, because 6455919457 - 2⁷ = 6455919329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6455919398 and 6455919407.

It is not an unprimeable number, because it can be changed into a prime (6455919467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248304582 + ... + 248304607.

It is an arithmetic number, because the mean of its divisors is an integer number (1738132165).

Almost surely, 2^6455919457 is an apocalyptic number.

It is an amenable number.

6455919457 is a deficient number, since it is larger than the sum of its proper divisors (496609203).

6455919457 is a wasteful number, since it uses less digits than its factorization.

6455919457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496609202.

The product of its digits is 6804000, while the sum is 55.

The square root of 6455919457 is about 80348.7364990888. The cubic root of 6455919457 is about 1862.0272590377.

The spelling of 6455919457 in words is "six billion, four hundred fifty-five million, nine hundred nineteen thousand, four hundred fifty-seven".