64451794419 has 8 divisors (see below), whose sum is σ = 95484139920. Its totient is φ = 42967862928.

The previous prime is 64451794403. The next prime is 64451794441. The reversal of 64451794419 is 91449715446.

It is a happy number.

64451794419 is a `hidden beast` number, since 64 + 451 + 7 + 94 + 41 + 9 = 666.

It is not a de Polignac number, because 64451794419 - 2⁴ = 64451794403 is a prime.

It is a super-2 number, since 2×64451794419² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64451794469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1193551722 + ... + 1193551775.

It is an arithmetic number, because the mean of its divisors is an integer number (11935517490).

Almost surely, 2^64451794419 is an apocalyptic number.

64451794419 is a deficient number, since it is larger than the sum of its proper divisors (31032345501).

64451794419 is a wasteful number, since it uses less digits than its factorization.

64451794419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387103506 (or 2387103500 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 64451794419 in words is "sixty-four billion, four hundred fifty-one million, seven hundred ninety-four thousand, four hundred nineteen".