65401526064 has 160 divisors (see below), whose sum is σ = 205921820160. Its totient is φ = 17460228096.

The previous prime is 65401526041. The next prime is 65401526083. The reversal of 65401526064 is 46062510456.

65401526064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65401526064² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 752782 + ... + 835154.

It is an arithmetic number, because the mean of its divisors is an integer number (1287011376).

Almost surely, 2^65401526064 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 65401526064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102960910080).

65401526064 is an abundant number, since it is smaller than the sum of its proper divisors (140520294096).

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

65401526064 is a wasteful number, since it uses less digits than its factorization.

65401526064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82547 (or 82541 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 65401526064 in words is "sixty-five billion, four hundred one million, five hundred twenty-six thousand, sixty-four".