51445030002 has 64 divisors (see below), whose sum is σ = 108739584000. Its totient is φ = 16180829568.

The previous prime is 51445029973. The next prime is 51445030009. The reversal of 51445030002 is 20003054415.

It is a super-2 number, since 2×51445030002² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51445030009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55978899 + ... + 55979817.

It is an arithmetic number, because the mean of its divisors is an integer number (1699056000).

Almost surely, 2^51445030002 is an apocalyptic number.

51445030002 is an abundant number, since it is smaller than the sum of its proper divisors (57294553998).

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

51445030002 is a wasteful number, since it uses less digits than its factorization.

51445030002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 51445030002 its reverse (20003054415), we get a palindrome (71448084417).

The spelling of 51445030002 in words is "fifty-one billion, four hundred forty-five million, thirty thousand, two".