65454945820 has 48 divisors (see below), whose sum is σ = 150028327008. Its totient is φ = 23789576960.

The previous prime is 65454945797. The next prime is 65454945847. The reversal of 65454945820 is 2854945456.

It is a congruent number.

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, 358662 + ... + 509458.

It is an arithmetic number, because the mean of its divisors is an integer number (3125590146).

Almost surely, 2^65454945820 is an apocalyptic number.

It is an amenable number.

65454945820 is an abundant number, since it is smaller than the sum of its proper divisors (84573381188).

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

65454945820 is a wasteful number, since it uses less digits than its factorization.

65454945820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152790 (or 152788 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 52.

The spelling of 65454945820 in words is "sixty-five billion, four hundred fifty-four million, nine hundred forty-five thousand, eight hundred twenty".