65132223156 has 324 divisors, whose sum is σ = 226716445956. Its totient is φ = 15615452160.

The previous prime is 65132223103. The next prime is 65132223157.

65132223156 is a `hidden beast` number, since 6 + 51 + 322 + 231 + 56 = 666.

65132223156 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 41888171556 + 23244051600 = 204666^2 + 152460^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 65132223156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65132223157) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 2763036 + ... + 2786508.

Almost surely, 2^65132223156 is an apocalyptic number.

65132223156 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65132223156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113358222978).

65132223156 is an abundant number, since it is smaller than the sum of its proper divisors (161584222800).

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

65132223156 is a wasteful number, since it uses less digits than its factorization.

65132223156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23532 (or 23509 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The spelling of 65132223156 in words is "sixty-five billion, one hundred thirty-two million, two hundred twenty-three thousand, one hundred fifty-six".