51155617060 has 12 divisors (see below), whose sum is σ = 107426795868. Its totient is φ = 20462246816.

The previous prime is 51155617039. The next prime is 51155617087. The reversal of 51155617060 is 6071655115.

It can be written as a sum of positive squares in 2 ways, for example, as 8435687716 + 42719929344 = 91846^2 + 206688^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278890407 + ... + 1278890446.

It is an arithmetic number, because the mean of its divisors is an integer number (8952232989).

Almost surely, 2^51155617060 is an apocalyptic number.

It is an amenable number.

51155617060 is an abundant number, since it is smaller than the sum of its proper divisors (56271178808).

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

51155617060 is a wasteful number, since it uses less digits than its factorization.

51155617060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557780862 (or 2557780860 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 37.

The spelling of 51155617060 in words is "fifty-one billion, one hundred fifty-five million, six hundred seventeen thousand, sixty".