51450415242 has 32 divisors (see below), whose sum is σ = 105246749952. Its totient is φ = 16760239104.

The previous prime is 51450415223. The next prime is 51450415249. The reversal of 51450415242 is 24251405415.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51450415249) 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, 54238 + ... + 325334.

It is an arithmetic number, because the mean of its divisors is an integer number (3288960936).

Almost surely, 2^51450415242 is an apocalyptic number.

51450415242 is an abundant number, since it is smaller than the sum of its proper divisors (53796334710).

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

51450415242 is a wasteful number, since it uses less digits than its factorization.

51450415242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271822.

The product of its (nonzero) digits is 32000, while the sum is 33.

The spelling of 51450415242 in words is "fifty-one billion, four hundred fifty million, four hundred fifteen thousand, two hundred forty-two".