65748913920 has 144 divisors (see below), whose sum is σ = 233317449120. Its totient is φ = 17533034496.

The previous prime is 65748913861. The next prime is 65748913933. The reversal of 65748913920 is 2931984756.

65748913920 is a `hidden beast` number, since 6 + 5 + 7 + 489 + 139 + 20 = 666.

65748913920 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 (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 916669 + ... + 985788.

It is a 1-persistent number, because it is pandigital, but 2⋅65748913920 = 131497827840 is not.

Almost surely, 2^65748913920 is an apocalyptic number.

65748913920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65748913920 is an abundant number, since it is smaller than the sum of its proper divisors (167568535200).

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

65748913920 is a wasteful number, since it uses less digits than its factorization.

65748913920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902487 (or 1902467 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 65748913920 in words is "sixty-five billion, seven hundred forty-eight million, nine hundred thirteen thousand, nine hundred twenty".