64523032545 has 16 divisors (see below), whose sum is σ = 103339192320. Its totient is φ = 34378170624.

The previous prime is 64523032531. The next prime is 64523032559. The reversal of 64523032545 is 54523032546.

It is an interprime number because it is at equal distance from previous prime (64523032531) and next prime (64523032559).

It is not a de Polignac number, because 64523032545 - 2⁴ = 64523032529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2116449 + ... + 2146718.

It is an arithmetic number, because the mean of its divisors is an integer number (6458699520).

Almost surely, 2^64523032545 is an apocalyptic number.

It is an amenable number.

64523032545 is a deficient number, since it is larger than the sum of its proper divisors (38816159775).

64523032545 is a wasteful number, since it uses less digits than its factorization.

64523032545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264184.

The product of its (nonzero) digits is 432000, while the sum is 39.

Subtracting from 64523032545 its reverse (54523032546), we obtain a palindrome (9999999999).

The spelling of 64523032545 in words is "sixty-four billion, five hundred twenty-three million, thirty-two thousand, five hundred forty-five".