65640059052 has 12 divisors (see below), whose sum is σ = 153160137816. Its totient is φ = 21880019680.

The previous prime is 65640059033. The next prime is 65640059083. The reversal of 65640059052 is 25095004656.

65640059052 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 (12).

It is a junction number, because it is equal to n+sod(n) for n = 65640058995 and 65640059013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2735002449 + ... + 2735002472.

It is an arithmetic number, because the mean of its divisors is an integer number (12763344818).

Almost surely, 2^65640059052 is an apocalyptic number.

It is an amenable number.

65640059052 is an abundant number, since it is smaller than the sum of its proper divisors (87520078764).

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

65640059052 is a wasteful number, since it uses less digits than its factorization.

65640059052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5470004928 (or 5470004926 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 65640059052 in words is "sixty-five billion, six hundred forty million, fifty-nine thousand, fifty-two".