51081328813254 has 64 divisors (see below), whose sum is σ = 105087261151488. Its totient is φ = 16543844352000.

The previous prime is 51081328813253. The next prime is 51081328813283. The reversal of 51081328813254 is 45231882318015.

It is a junction number, because it is equal to n+sod(n) for n = 51081328813197 and 51081328813206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51081328813253) 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, 1075576449 + ... + 1075623939.

It is an arithmetic number, because the mean of its divisors is an integer number (1641988455492).

Almost surely, 2^{51081328813254} is an apocalyptic number.

51081328813254 is an abundant number, since it is smaller than the sum of its proper divisors (54005932338234).

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

51081328813254 is a wasteful number, since it uses less digits than its factorization.

51081328813254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69333.

The product of its (nonzero) digits is 1843200, while the sum is 51.

The spelling of 51081328813254 in words is "fifty-one trillion, eighty-one billion, three hundred twenty-eight million, eight hundred thirteen thousand, two hundred fifty-four".