64001352523 has 4 divisors (see below), whose sum is σ = 66784020048. Its totient is φ = 61218685000.

The previous prime is 64001352511. The next prime is 64001352551. The reversal of 64001352523 is 32525310046.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32525310046 = 2 ⋅16262655023.

It is a cyclic number.

It is not a de Polignac number, because 64001352523 - 2⁹ = 64001352011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64001352553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391333728 + ... + 1391333773.

It is an arithmetic number, because the mean of its divisors is an integer number (16696005012).

Almost surely, 2^64001352523 is an apocalyptic number.

64001352523 is a deficient number, since it is larger than the sum of its proper divisors (2782667525).

64001352523 is a wasteful number, since it uses less digits than its factorization.

64001352523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782667524.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 64001352523 its reverse (32525310046), we get a palindrome (96526662569).

The spelling of 64001352523 in words is "sixty-four billion, one million, three hundred fifty-two thousand, five hundred twenty-three".