65166120654 has 16 divisors (see below), whose sum is σ = 133363224192. Its totient is φ = 21216876408.

The previous prime is 65166120647. The next prime is 65166120673. The reversal of 65166120654 is 45602166156.

65166120654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126290674 + ... + 126291189.

It is an arithmetic number, because the mean of its divisors is an integer number (8335201512).

Almost surely, 2^65166120654 is an apocalyptic number.

65166120654 is an abundant number, since it is smaller than the sum of its proper divisors (68197103538).

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

65166120654 is a wasteful number, since it uses less digits than its factorization.

65166120654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252581911.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 65166120654 in words is "sixty-five billion, one hundred sixty-six million, one hundred twenty thousand, six hundred fifty-four".