65803879680 has 432 divisors, whose sum is σ = 266706385344. Its totient is φ = 13673103360.

The previous prime is 65803879663. The next prime is 65803879699. The reversal of 65803879680 is 8697830856.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2053864 + ... + 2085656.

It is an arithmetic number, because the mean of its divisors is an integer number (617375892).

Almost surely, 2^65803879680 is an apocalyptic number.

65803879680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65803879680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133353192672).

65803879680 is an abundant number, since it is smaller than the sum of its proper divisors (200902505664).

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

65803879680 is a wasteful number, since it uses less digits than its factorization.

65803879680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31842 (or 31821 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 65803879680 in words is "sixty-five billion, eight hundred three million, eight hundred seventy-nine thousand, six hundred eighty".