51203653470 has 160 divisors (see below), whose sum is σ = 145744790400. Its totient is φ = 12862701504.

The previous prime is 51203653463. The next prime is 51203653507. The reversal of 51203653470 is 7435630215.

51203653470 is a `hidden beast` number, since 5 + 1 + 20 + 36 + 534 + 70 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2745517 + ... + 2764103.

It is an arithmetic number, because the mean of its divisors is an integer number (910904940).

Almost surely, 2^51203653470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51203653470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72872395200).

51203653470 is an abundant number, since it is smaller than the sum of its proper divisors (94541136930).

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

51203653470 is a wasteful number, since it uses less digits than its factorization.

51203653470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18804 (or 18795 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 51203653470 in words is "fifty-one billion, two hundred three million, six hundred fifty-three thousand, four hundred seventy".