64020535434 has 32 divisors (see below), whose sum is σ = 145737809280. Its totient is φ = 20819685600.

The previous prime is 64020535421. The next prime is 64020535441. The reversal of 64020535434 is 43453502046.

64020535434 is a `hidden beast` number, since 6 + 40 + 20 + 53 + 543 + 4 = 666.

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, 14455902 + ... + 14460329.

It is an arithmetic number, because the mean of its divisors is an integer number (4554306540).

Almost surely, 2^64020535434 is an apocalyptic number.

64020535434 is an abundant number, since it is smaller than the sum of its proper divisors (81717273846).

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

64020535434 is a wasteful number, since it uses less digits than its factorization.

64020535434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28916283 (or 28916277 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The spelling of 64020535434 in words is "sixty-four billion, twenty million, five hundred thirty-five thousand, four hundred thirty-four".