51330433400 has 48 divisors (see below), whose sum is σ = 119582655000. Its totient is φ = 20490986880.

The previous prime is 51330433393. The next prime is 51330433411. The reversal of 51330433400 is 433403315.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51330433400.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 157367 + ... + 356966.

Almost surely, 2^51330433400 is an apocalyptic number.

51330433400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51330433400 is an abundant number, since it is smaller than the sum of its proper divisors (68252221600).

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

51330433400 is a wasteful number, since it uses less digits than its factorization.

51330433400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514848 (or 514839 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 51330433400 its reverse (433403315), we get a palindrome (51763836715).

The spelling of 51330433400 in words is "fifty-one billion, three hundred thirty million, four hundred thirty-three thousand, four hundred".