51230455320 has 64 divisors (see below), whose sum is σ = 167663312640. Its totient is φ = 12419504000.

The previous prime is 51230455313. The next prime is 51230455327. The reversal of 51230455320 is 2355403215.

It is an interprime number because it is at equal distance from previous prime (51230455313) and next prime (51230455327).

It is a super-3 number, since 3×51230455320³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51230455327) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19404156 + ... + 19406795.

It is an arithmetic number, because the mean of its divisors is an integer number (2619739260).

Almost surely, 2^51230455320 is an apocalyptic number.

It is an amenable number.

51230455320 is an abundant number, since it is smaller than the sum of its proper divisors (116432857320).

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

51230455320 is a wasteful number, since it uses less digits than its factorization.

51230455320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38810976 (or 38810972 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 51230455320 its reverse (2355403215), we get a palindrome (53585858535).

The spelling of 51230455320 in words is "fifty-one billion, two hundred thirty million, four hundred fifty-five thousand, three hundred twenty".