51211314432 has 54 divisors (see below), whose sum is σ = 147654851162. Its totient is φ = 17070437376.

The previous prime is 51211314431. The next prime is 51211314503. The reversal of 51211314432 is 23441311215.

51211314432 is a `hidden beast` number, since 5 + 1 + 211 + 3 + 1 + 443 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26980033536 + 24231280896 = 164256^2 + 155664^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51211314396 and 51211314405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51211314431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11111263 + ... + 11115870.

Almost surely, 2^51211314432 is an apocalyptic number.

It is an amenable number.

51211314432 is an abundant number, since it is smaller than the sum of its proper divisors (96443536730).

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

51211314432 is a wasteful number, since it uses less digits than its factorization.

51211314432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22227155 (or 22227138 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 51211314432 its reverse (23441311215), we get a palindrome (74652625647).

The spelling of 51211314432 in words is "fifty-one billion, two hundred eleven million, three hundred fourteen thousand, four hundred thirty-two".