5136521632 has 72 divisors (see below), whose sum is σ = 11150371008. Its totient is φ = 2327445120.

The previous prime is 5136521629. The next prime is 5136521639. The reversal of 5136521632 is 2361256315.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (5136521639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1341673 + ... + 1345495.

It is an arithmetic number, because the mean of its divisors is an integer number (154866264).

Almost surely, 2^5136521632 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 5136521632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5575185504).

5136521632 is an abundant number, since it is smaller than the sum of its proper divisors (6013849376).

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

5136521632 is a wasteful number, since it uses less digits than its factorization.

5136521632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202 (or 4183 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 5136521632 is about 71669.5307086631. The cubic root of 5136521632 is about 1725.3996561349.

Adding to 5136521632 its reverse (2361256315), we get a palindrome (7497777947).

The spelling of 5136521632 in words is "five billion, one hundred thirty-six million, five hundred twenty-one thousand, six hundred thirty-two".