64919596428 has 36 divisors (see below), whose sum is σ = 164156553288. Its totient is φ = 21632712960.

The previous prime is 64919596421. The next prime is 64919596429. The reversal of 64919596428 is 82469591946.

64919596428 is a `hidden beast` number, since 6 + 4 + 9 + 19 + 596 + 4 + 28 = 666.

64919596428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (64919596421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187026 + ... + 405977.

It is an arithmetic number, because the mean of its divisors is an integer number (4559904258).

Almost surely, 2^64919596428 is an apocalyptic number.

It is an amenable number.

64919596428 is an abundant number, since it is smaller than the sum of its proper divisors (99236956860).

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

64919596428 is a wasteful number, since it uses less digits than its factorization.

64919596428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596054 (or 596049 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The spelling of 64919596428 in words is "sixty-four billion, nine hundred nineteen million, five hundred ninety-six thousand, four hundred twenty-eight".