64508340783 has 8 divisors (see below), whose sum is σ = 87841145088. Its totient is φ = 42090548504.

The previous prime is 64508340781. The next prime is 64508340791. The reversal of 64508340783 is 38704380546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64508340783 - 2¹ = 64508340781 is a prime.

It is a super-2 number, since 2×64508340783² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64508340781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228752841 + ... + 228753122.

It is an arithmetic number, because the mean of its divisors is an integer number (10980143136).

Almost surely, 2^64508340783 is an apocalyptic number.

64508340783 is a deficient number, since it is larger than the sum of its proper divisors (23332804305).

64508340783 is a wasteful number, since it uses less digits than its factorization.

64508340783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457506013.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 64508340783 in words is "sixty-four billion, five hundred eight million, three hundred forty thousand, seven hundred eighty-three".