64425610552 has 32 divisors (see below), whose sum is σ = 128009250000. Its totient is φ = 30312569088.

The previous prime is 64425610541. The next prime is 64425610553. The reversal of 64425610552 is 25501652446.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64425610553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1399677 + ... + 1444972.

Almost surely, 2^64425610552 is an apocalyptic number.

It is an amenable number.

64425610552 is a deficient number, since it is larger than the sum of its proper divisors (63583639448).

64425610552 is a wasteful number, since it uses less digits than its factorization.

64425610552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844823 (or 2844819 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 64425610552 in words is "sixty-four billion, four hundred twenty-five million, six hundred ten thousand, five hundred fifty-two".