64526510420 has 12 divisors (see below), whose sum is σ = 135505671924. Its totient is φ = 25810604160.

The previous prime is 64526510383. The next prime is 64526510431. The reversal of 64526510420 is 2401562546.

It can be written as a sum of positive squares in 2 ways, for example, as 7842519364 + 56683991056 = 88558^2 + 238084^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613162741 + ... + 1613162780.

It is an arithmetic number, because the mean of its divisors is an integer number (11292139327).

Almost surely, 2^64526510420 is an apocalyptic number.

It is an amenable number.

64526510420 is an abundant number, since it is smaller than the sum of its proper divisors (70979161504).

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

64526510420 is a wasteful number, since it uses less digits than its factorization.

64526510420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226325530 (or 3226325528 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 64526510420 in words is "sixty-four billion, five hundred twenty-six million, five hundred ten thousand, four hundred twenty".