51080774478 has 32 divisors (see below), whose sum is σ = 103519503360. Its totient is φ = 16800869280.

The previous prime is 51080774471. The next prime is 51080774513. The reversal of 51080774478 is 87447708015.

It is a super-3 number, since 3×51080774478³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51080774478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51080774471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743023 + ... + 808853.

It is an arithmetic number, because the mean of its divisors is an integer number (3234984480).

Almost surely, 2^51080774478 is an apocalyptic number.

51080774478 is an abundant number, since it is smaller than the sum of its proper divisors (52438728882).

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

51080774478 is a wasteful number, since it uses less digits than its factorization.

51080774478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67552.

The product of its (nonzero) digits is 1756160, while the sum is 51.

The spelling of 51080774478 in words is "fifty-one billion, eighty million, seven hundred seventy-four thousand, four hundred seventy-eight".