51206266055430 has 192 divisors, whose sum is σ = 135940162325760. Its totient is φ = 13368560744448.

The previous prime is 51206266055411. The next prime is 51206266055509. The reversal of 51206266055430 is 3455066260215.

51206266055430 is a `hidden beast` number, since 5 + 1 + 2 + 0 + 6 + 2 + 6 + 60 + 554 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8090732506 + ... + 8090738834.

It is an arithmetic number, because the mean of its divisors is an integer number (708021678780).

Almost surely, 2^{51206266055430} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51206266055430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67970081162880).

51206266055430 is an abundant number, since it is smaller than the sum of its proper divisors (84733896270330).

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

51206266055430 is a wasteful number, since it uses less digits than its factorization.

51206266055430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9775 (or 9772 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 51206266055430 in words is "fifty-one trillion, two hundred six billion, two hundred sixty-six million, fifty-five thousand, four hundred thirty".