65132081600 has 168 divisors, whose sum is σ = 164018506608. Its totient is φ = 25447219200.

The previous prime is 65132081533. The next prime is 65132081603. The reversal of 65132081600 is 618023156.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65132081603) 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, 20435207 + ... + 20438393.

Almost surely, 2^65132081600 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 65132081600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82009253304).

65132081600 is an abundant number, since it is smaller than the sum of its proper divisors (98886425008).

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

65132081600 is a wasteful number, since it uses less digits than its factorization.

65132081600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503 (or 3488 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 65132081600 in words is "sixty-five billion, one hundred thirty-two million, eighty-one thousand, six hundred".