51570610272 has 144 divisors (see below), whose sum is σ = 149008008240. Its totient is φ = 16916299776.

The previous prime is 51570610241. The next prime is 51570610277. The reversal of 51570610272 is 27201607515.

51570610272 is a `hidden beast` number, since 5 + 1 + 570 + 6 + 10 + 2 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51570610277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4995388 + ... + 5005700.

It is an arithmetic number, because the mean of its divisors is an integer number (1034777835).

Almost surely, 2^51570610272 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 51570610272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74504004120).

51570610272 is an abundant number, since it is smaller than the sum of its proper divisors (97437397968).

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

51570610272 is a wasteful number, since it uses less digits than its factorization.

51570610272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10605 (or 10594 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The spelling of 51570610272 in words is "fifty-one billion, five hundred seventy million, six hundred ten thousand, two hundred seventy-two".