64354671619 has 32 divisors (see below), whose sum is σ = 76519202816. Its totient is φ = 52962024960.

The previous prime is 64354671607. The next prime is 64354671649. The reversal of 64354671619 is 91617645346.

It is a cyclic number.

It is not a de Polignac number, because 64354671619 - 2¹¹ = 64354669571 is a prime.

It is a super-2 number, since 2×64354671619² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64354671649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36214459 + ... + 36216235.

It is an arithmetic number, because the mean of its divisors is an integer number (2391225088).

Almost surely, 2^64354671619 is an apocalyptic number.

64354671619 is a deficient number, since it is larger than the sum of its proper divisors (12164531197).

64354671619 is a wasteful number, since it uses less digits than its factorization.

64354671619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035.

The product of its digits is 3265920, while the sum is 52.

The spelling of 64354671619 in words is "sixty-four billion, three hundred fifty-four million, six hundred seventy-one thousand, six hundred nineteen".