51366041430 has 128 divisors (see below), whose sum is σ = 138356937216. Its totient is φ = 12095078400.

The previous prime is 51366041407. The next prime is 51366041527. The reversal of 51366041430 is 3414066315.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51366041391 and 51366041400.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 7823329 + ... + 7829891.

It is an arithmetic number, because the mean of its divisors is an integer number (1080913572).

Almost surely, 2^51366041430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51366041430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69178468608).

51366041430 is an abundant number, since it is smaller than the sum of its proper divisors (86990895786).

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

51366041430 is a wasteful number, since it uses less digits than its factorization.

51366041430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7262.

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 51366041430 in words is "fifty-one billion, three hundred sixty-six million, forty-one thousand, four hundred thirty".