65431674880 has 224 divisors, whose sum is σ = 184495123008. Its totient is φ = 21961113600.

The previous prime is 65431674839. The next prime is 65431674881. The reversal of 65431674880 is 8847613456.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (65431674881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5851695 + ... + 5862865.

It is an arithmetic number, because the mean of its divisors is an integer number (823638942).

Almost surely, 2^65431674880 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 65431674880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92247561504).

65431674880 is an abundant number, since it is smaller than the sum of its proper divisors (119063448128).

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

65431674880 is a wasteful number, since it uses less digits than its factorization.

65431674880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11226 (or 11202 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 65431674880 in words is "sixty-five billion, four hundred thirty-one million, six hundred seventy-four thousand, eight hundred eighty".