6531136632 has 96 divisors (see below), whose sum is σ = 18375786000. Its totient is φ = 2093091840.

The previous prime is 6531136621. The next prime is 6531136639. The reversal of 6531136632 is 2366311356.

6531136632 is a `hidden beast` number, since 6 + 5 + 3 + 1 + 13 + 6 + 632 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6531136639) 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, 496719 + ... + 509697.

Almost surely, 2^6531136632 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 6531136632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9187893000).

6531136632 is an abundant number, since it is smaller than the sum of its proper divisors (11844649368).

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

6531136632 is a wasteful number, since it uses less digits than its factorization.

6531136632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13261 (or 13254 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 6531136632 is about 80815.4479787126. The cubic root of 6531136632 is about 1869.2307770688.

Adding to 6531136632 its reverse (2366311356), we get a palindrome (8897447988).

The spelling of 6531136632 in words is "six billion, five hundred thirty-one million, one hundred thirty-six thousand, six hundred thirty-two".