65489477196 has 384 divisors, whose sum is σ = 194786242560. Its totient is φ = 16821043200.

The previous prime is 65489477177. The next prime is 65489477203. The reversal of 65489477196 is 69177498456.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 361820226 + ... + 361820406.

It is an arithmetic number, because the mean of its divisors is an integer number (507255840).

Almost surely, 2^65489477196 is an apocalyptic number.

65489477196 is a gapful number since it is divisible by the number (66) 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 65489477196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97393121280).

65489477196 is an abundant number, since it is smaller than the sum of its proper divisors (129296765364).

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

65489477196 is a wasteful number, since it uses less digits than its factorization.

65489477196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 463 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 66.

The spelling of 65489477196 in words is "sixty-five billion, four hundred eighty-nine million, four hundred seventy-seven thousand, one hundred ninety-six".