51543425420 has 48 divisors (see below), whose sum is σ = 110113274880. Its totient is φ = 20261022144.

The previous prime is 51543425399. The next prime is 51543425429. The reversal of 51543425420 is 2452434515.

It is not an unprimeable number, because it can be changed into a prime (51543425429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4746437 + ... + 4757283.

It is an arithmetic number, because the mean of its divisors is an integer number (2294026560).

Almost surely, 2^51543425420 is an apocalyptic number.

It is an amenable number.

51543425420 is an abundant number, since it is smaller than the sum of its proper divisors (58569849460).

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

51543425420 is a wasteful number, since it uses less digits than its factorization.

51543425420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14942 (or 14940 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 51543425420 its reverse (2452434515), we get a palindrome (53995859935).

The spelling of 51543425420 in words is "fifty-one billion, five hundred forty-three million, four hundred twenty-five thousand, four hundred twenty".