65645034630 has 64 divisors (see below), whose sum is σ = 181648424448. Its totient is φ = 14871790080.

The previous prime is 65645034629. The next prime is 65645034641. The reversal of 65645034630 is 3643054656.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1359436 + ... + 1406895.

It is an arithmetic number, because the mean of its divisors is an integer number (2838256632).

Almost surely, 2^65645034630 is an apocalyptic number.

65645034630 is an abundant number, since it is smaller than the sum of its proper divisors (116003389818).

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

65645034630 is a wasteful number, since it uses less digits than its factorization.

65645034630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766461.

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 65645034630 in words is "sixty-five billion, six hundred forty-five million, thirty-four thousand, six hundred thirty".