51920705852 has 6 divisors (see below), whose sum is σ = 90861235248. Its totient is φ = 25960352924.

The previous prime is 51920705821. The next prime is 51920705867. The reversal of 51920705852 is 25850702915.

51920705852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6490088228 + ... + 6490088235.

It is an arithmetic number, because the mean of its divisors is an integer number (15143539208).

Almost surely, 2^51920705852 is an apocalyptic number.

It is an amenable number.

51920705852 is a deficient number, since it is larger than the sum of its proper divisors (38940529396).

51920705852 is a wasteful number, since it uses less digits than its factorization.

51920705852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12980176467 (or 12980176465 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 44.

The spelling of 51920705852 in words is "fifty-one billion, nine hundred twenty million, seven hundred five thousand, eight hundred fifty-two".