51055135524 has 72 divisors (see below), whose sum is σ = 136140207840. Its totient is φ = 16088049792.

The previous prime is 51055135489. The next prime is 51055135603. The reversal of 51055135524 is 42553155015.

51055135524 is a `hidden beast` number, since 51 + 0 + 5 + 51 + 3 + 552 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 239512 + ... + 399344.

It is an arithmetic number, because the mean of its divisors is an integer number (1890836220).

Almost surely, 2^51055135524 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 51055135524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68070103920).

51055135524 is an abundant number, since it is smaller than the sum of its proper divisors (85085072316).

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

51055135524 is a wasteful number, since it uses less digits than its factorization.

51055135524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160329 (or 160324 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 51055135524 in words is "fifty-one billion, fifty-five million, one hundred thirty-five thousand, five hundred twenty-four".