65820453456 has 20 divisors (see below), whose sum is σ = 170036171552. Its totient is φ = 21940151136.

The previous prime is 65820453437. The next prime is 65820453509. The reversal of 65820453456 is 65435402856.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1371259447 = 65820453456 / (6 + 5 + 8 + 2 + 0 + 4 + 5 + 3 + 4 + 5 + 6).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685629676 + ... + 685629771.

Almost surely, 2^65820453456 is an apocalyptic number.

It is an amenable number.

65820453456 is an abundant number, since it is smaller than the sum of its proper divisors (104215718096).

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

65820453456 is a wasteful number, since it uses less digits than its factorization.

65820453456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371259458 (or 1371259452 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 65820453456 in words is "sixty-five billion, eight hundred twenty million, four hundred fifty-three thousand, four hundred fifty-six".