65495311580 has 48 divisors (see below), whose sum is σ = 142526049120. Its totient is φ = 25251518208.

The previous prime is 65495311573. The next prime is 65495311603. The reversal of 65495311580 is 8511359456.

It is a super-2 number, since 2×65495311580² (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, 244274 + ... + 436646.

It is an arithmetic number, because the mean of its divisors is an integer number (2969292690).

Almost surely, 2^65495311580 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 65495311580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71263024560).

65495311580 is an abundant number, since it is smaller than the sum of its proper divisors (77030737540).

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

65495311580 is a wasteful number, since it uses less digits than its factorization.

65495311580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192998 (or 192996 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 65495311580 in words is "sixty-five billion, four hundred ninety-five million, three hundred eleven thousand, five hundred eighty".