51420310412420 has 24 divisors (see below), whose sum is σ = 108585906912000. Its totient is φ = 20453218441952.

The previous prime is 51420310412347. The next prime is 51420310412473. The reversal of 51420310412420 is 2421401302415.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7181604020 + ... + 7181611179.

It is an arithmetic number, because the mean of its divisors is an integer number (4524412788000).

Almost surely, 2^{51420310412420} is an apocalyptic number.

It is an amenable number.

51420310412420 is an abundant number, since it is smaller than the sum of its proper divisors (57165596499580).

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

51420310412420 is a wasteful number, since it uses less digits than its factorization.

51420310412420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14363215387 (or 14363215385 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 51420310412420 its reverse (2421401302415), we get a palindrome (53841711714835).

The spelling of 51420310412420 in words is "fifty-one trillion, four hundred twenty billion, three hundred ten million, four hundred twelve thousand, four hundred twenty".