65549654320 has 40 divisors (see below), whose sum is σ = 152855243424. Its totient is φ = 26142047232.

The previous prime is 65549654311. The next prime is 65549654327. The reversal of 65549654320 is 2345694556.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (65549654327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1188724 + ... + 1242643.

Almost surely, 2^65549654320 is an apocalyptic number.

It is an amenable number.

65549654320 is an abundant number, since it is smaller than the sum of its proper divisors (87305589104).

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

65549654320 is a wasteful number, since it uses less digits than its factorization.

65549654320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431717 (or 2431711 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 65549654320 in words is "sixty-five billion, five hundred forty-nine million, six hundred fifty-four thousand, three hundred twenty".