51422340630 has 128 divisors (see below), whose sum is σ = 130110261120. Its totient is φ = 12989583360.

The previous prime is 51422340583. The next prime is 51422340721. The reversal of 51422340630 is 3604322415.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30809436 + ... + 30811104.

It is an arithmetic number, because the mean of its divisors is an integer number (1016486415).

Almost surely, 2^51422340630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51422340630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65055130560).

51422340630 is an abundant number, since it is smaller than the sum of its proper divisors (78687920490).

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

51422340630 is a wasteful number, since it uses less digits than its factorization.

51422340630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434.

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 51422340630 in words is "fifty-one billion, four hundred twenty-two million, three hundred forty thousand, six hundred thirty".