51055055464 has 32 divisors (see below), whose sum is σ = 109438358400. Its totient is φ = 21873804480.

The previous prime is 51055055461. The next prime is 51055055473. The reversal of 51055055464 is 46455055015.

51055055464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51055055461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35842 + ... + 321550.

It is an arithmetic number, because the mean of its divisors is an integer number (3419948700).

Almost surely, 2^51055055464 is an apocalyptic number.

It is an amenable number.

51055055464 is an abundant number, since it is smaller than the sum of its proper divisors (58383302936).

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

51055055464 is a wasteful number, since it uses less digits than its factorization.

51055055464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288913 (or 288909 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 51055055464 in words is "fifty-one billion, fifty-five million, fifty-five thousand, four hundred sixty-four".