65831977008 has 120 divisors (see below), whose sum is σ = 210642851328. Its totient is φ = 18801542016.

The previous prime is 65831976997. The next prime is 65831977009. The reversal of 65831977008 is 80077913856.

It is not an unprimeable number, because it can be changed into a prime (65831977009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2777335 + ... + 2800937.

Almost surely, 2^65831977008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65831977008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105321425664).

65831977008 is an abundant number, since it is smaller than the sum of its proper divisors (144810874320).

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

65831977008 is a wasteful number, since it uses less digits than its factorization.

65831977008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26391 (or 26382 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 65831977008 in words is "sixty-five billion, eight hundred thirty-one million, nine hundred seventy-seven thousand, eight".