64424051584 has 16 divisors (see below), whose sum is σ = 128344790520. Its totient is φ = 32212025728.

The previous prime is 64424051567. The next prime is 64424051591. The reversal of 64424051584 is 48515042446.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 64424051584.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251656324 + ... + 251656579.

Almost surely, 2^64424051584 is an apocalyptic number.

64424051584 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64424051584 is a deficient number, since it is larger than the sum of its proper divisors (63920738936).

64424051584 is an equidigital number, since it uses as much as digits as its factorization.

64424051584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503312917 (or 503312905 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 43.

The spelling of 64424051584 in words is "sixty-four billion, four hundred twenty-four million, fifty-one thousand, five hundred eighty-four".