64028734617 has 16 divisors (see below), whose sum is σ = 87723196992. Its totient is φ = 41511211200.

The previous prime is 64028734613. The next prime is 64028734673. The reversal of 64028734617 is 71643782046.

It is a happy number.

It is not a de Polignac number, because 64028734617 - 2² = 64028734613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64028734613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77242 + ... + 366092.

It is an arithmetic number, because the mean of its divisors is an integer number (5482699812).

Almost surely, 2^64028734617 is an apocalyptic number.

It is an amenable number.

64028734617 is a deficient number, since it is larger than the sum of its proper divisors (23694462375).

64028734617 is a wasteful number, since it uses less digits than its factorization.

64028734617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290888.

The product of its (nonzero) digits is 1354752, while the sum is 48.

The spelling of 64028734617 in words is "sixty-four billion, twenty-eight million, seven hundred thirty-four thousand, six hundred seventeen".