64620306240513 has 16 divisors (see below), whose sum is σ = 87684051685440. Its totient is φ = 42324866067456.

The previous prime is 64620306240437. The next prime is 64620306240551. The reversal of 64620306240513 is 31504260302646.

It is a happy number.

It is not a de Polignac number, because 64620306240513 - 2¹⁸ = 64620305978369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64620306240593) 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, 810408703 + ... + 810488436.

It is an arithmetic number, because the mean of its divisors is an integer number (5480253230340).

Almost surely, 2^{64620306240513} is an apocalyptic number.

It is an amenable number.

64620306240513 is a deficient number, since it is larger than the sum of its proper divisors (23063745444927).

64620306240513 is a wasteful number, since it uses less digits than its factorization.

64620306240513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620897376.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 64620306240513 in words is "sixty-four trillion, six hundred twenty billion, three hundred six million, two hundred forty thousand, five hundred thirteen".