65826143220 has 48 divisors (see below), whose sum is σ = 188599561920. Its totient is φ = 17145413376.

The previous prime is 65826143191. The next prime is 65826143231. The reversal of 65826143220 is 2234162856.

It is a super-2 number, since 2×65826143220² (a number of 22 digits) contains 22 as substring.

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, 12754425 + ... + 12759584.

It is an arithmetic number, because the mean of its divisors is an integer number (3929157540).

Almost surely, 2^65826143220 is an apocalyptic number.

65826143220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65826143220 is an abundant number, since it is smaller than the sum of its proper divisors (122773418700).

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

65826143220 is a wasteful number, since it uses less digits than its factorization.

65826143220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25514064 (or 25514062 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 65826143220 in words is "sixty-five billion, eight hundred twenty-six million, one hundred forty-three thousand, two hundred twenty".