51064563340 has 24 divisors (see below), whose sum is σ = 122554952352. Its totient is φ = 17507850240.

The previous prime is 51064563317. The next prime is 51064563353. The reversal of 51064563340 is 4336546015.

It is a self number, because there is not a number n which added to its sum of digits gives 51064563340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182373301 + ... + 182373580.

It is an arithmetic number, because the mean of its divisors is an integer number (5106456348).

Almost surely, 2^51064563340 is an apocalyptic number.

It is an amenable number.

51064563340 is an abundant number, since it is smaller than the sum of its proper divisors (71490389012).

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

51064563340 is a wasteful number, since it uses less digits than its factorization.

51064563340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364746897 (or 364746895 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 51064563340 in words is "fifty-one billion, sixty-four million, five hundred sixty-three thousand, three hundred forty".