51405524004 has 48 divisors (see below), whose sum is σ = 124232673600. Its totient is φ = 16524256896.

The previous prime is 51405523957. The next prime is 51405524021. The reversal of 51405524004 is 40042550415.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199399 + ... + 377585.

It is an arithmetic number, because the mean of its divisors is an integer number (2588180700).

Almost surely, 2^51405524004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51405524004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62116336800).

51405524004 is an abundant number, since it is smaller than the sum of its proper divisors (72827149596).

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

51405524004 is a wasteful number, since it uses less digits than its factorization.

51405524004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179052 (or 179050 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 51405524004 in words is "fifty-one billion, four hundred five million, five hundred twenty-four thousand, four".