51202440005 has 8 divisors (see below), whose sum is σ = 61445433624. Its totient is φ = 40960281600.

The previous prime is 51202440001. The next prime is 51202440007. The reversal of 51202440005 is 50004420215.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 738861124 + 50463578881 = 27182^2 + 224641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51202440005 - 2² = 51202440001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51202440001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64916 + ... + 326525.

It is an arithmetic number, because the mean of its divisors is an integer number (7680679203).

Almost surely, 2^51202440005 is an apocalyptic number.

It is an amenable number.

51202440005 is a deficient number, since it is larger than the sum of its proper divisors (10242993619).

51202440005 is a wasteful number, since it uses less digits than its factorization.

51202440005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417607.

The product of its (nonzero) digits is 1600, while the sum is 23.

The spelling of 51202440005 in words is "fifty-one billion, two hundred two million, four hundred forty thousand, five".