51202133440 has 28 divisors (see below), whose sum is σ = 121925081016. Its totient is φ = 20480853248.

The previous prime is 51202133429. The next prime is 51202133453. The reversal of 51202133440 is 4433120215.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80003014 + ... + 80003653.

Almost surely, 2^51202133440 is an apocalyptic number.

It is an amenable number.

51202133440 is an abundant number, since it is smaller than the sum of its proper divisors (70722947576).

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

51202133440 is a wasteful number, since it uses less digits than its factorization.

51202133440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160006684 (or 160006674 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 51202133440 its reverse (4433120215), we get a palindrome (55635253655).

The spelling of 51202133440 in words is "fifty-one billion, two hundred two million, one hundred thirty-three thousand, four hundred forty".