65531413556 has 48 divisors (see below), whose sum is σ = 133536829440. Its totient is φ = 27559116000.

The previous prime is 65531413547. The next prime is 65531413559.

It is a happy number.

65531413556 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65531413559) 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, 269681 + ... + 451431.

It is an arithmetic number, because the mean of its divisors is an integer number (2782017280).

Almost surely, 2^65531413556 is an apocalyptic number.

It is an amenable number.

65531413556 is an abundant number, since it is smaller than the sum of its proper divisors (68005415884).

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

65531413556 is a wasteful number, since it uses less digits than its factorization.

65531413556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182004 (or 182002 counting only the distinct ones).

The product of its digits is 810000, while the sum is 44.

Adding to 65531413556 its product of digits (810000), we get a palindrome (65532223556).

Subtracting from 65531413556 its product of digits (810000), we obtain a palindrome (65530603556).

The spelling of 65531413556 in words is "sixty-five billion, five hundred thirty-one million, four hundred thirteen thousand, five hundred fifty-six".