51451430002 has 64 divisors (see below), whose sum is σ = 94491277056. Its totient is φ = 20509931520.

The previous prime is 51451429987. The next prime is 51451430003. The reversal of 51451430002 is 20003415415.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51451430003) 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, 11635752 + ... + 11640172.

It is an arithmetic number, because the mean of its divisors is an integer number (1476426204).

Almost surely, 2^51451430002 is an apocalyptic number.

51451430002 is a deficient number, since it is larger than the sum of its proper divisors (43039847054).

51451430002 is a wasteful number, since it uses less digits than its factorization.

51451430002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 51451430002 its reverse (20003415415), we get a palindrome (71454845417).

The spelling of 51451430002 in words is "fifty-one billion, four hundred fifty-one million, four hundred thirty thousand, two".