51630730426 has 16 divisors (see below), whose sum is σ = 84562872480. Its totient is φ = 23447340880.

The previous prime is 51630730399. The next prime is 51630730429. The reversal of 51630730426 is 62403703615.

51630730426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51630730429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033696 + ... + 1082491.

It is an arithmetic number, because the mean of its divisors is an integer number (5285179530).

Almost surely, 2^51630730426 is an apocalyptic number.

51630730426 is a deficient number, since it is larger than the sum of its proper divisors (32932142054).

51630730426 is a wasteful number, since it uses less digits than its factorization.

51630730426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117309.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 51630730426 in words is "fifty-one billion, six hundred thirty million, seven hundred thirty thousand, four hundred twenty-six".