51088656785 has 16 divisors (see below), whose sum is σ = 65555356752. Its totient is φ = 38085888000.

The previous prime is 51088656761. The next prime is 51088656793. The reversal of 51088656785 is 58765688015.

51088656785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 226028²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 51088656784 = 1^2 + 226028^2 .

It is not a de Polignac number, because 51088656785 - 2⁶ = 51088656721 is a prime.

It is a super-2 number, since 2×51088656785² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2966876 + ... + 2984045.

It is an arithmetic number, because the mean of its divisors is an integer number (4097209797).

Almost surely, 2^51088656785 is an apocalyptic number.

It is an amenable number.

51088656785 is a deficient number, since it is larger than the sum of its proper divisors (14466699967).

51088656785 is a wasteful number, since it uses less digits than its factorization.

51088656785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5951044.

The product of its (nonzero) digits is 16128000, while the sum is 59.

The spelling of 51088656785 in words is "fifty-one billion, eighty-eight million, six hundred fifty-six thousand, seven hundred eighty-five".