64345122620 has 24 divisors (see below), whose sum is σ = 135270248400. Its totient is φ = 25710336512.

The previous prime is 64345122613. The next prime is 64345122623. The reversal of 64345122620 is 2622154346.

It is a super-3 number, since 3×64345122620³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64345122623) 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, 1712990 + ... + 1750149.

It is an arithmetic number, because the mean of its divisors is an integer number (5636260350).

Almost surely, 2^64345122620 is an apocalyptic number.

It is an amenable number.

64345122620 is an abundant number, since it is smaller than the sum of its proper divisors (70925125780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64345122620 is a wasteful number, since it uses less digits than its factorization.

64345122620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464077 (or 3464075 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 64345122620 its reverse (2622154346), we get a palindrome (66967276966).

The spelling of 64345122620 in words is "sixty-four billion, three hundred forty-five million, one hundred twenty-two thousand, six hundred twenty".