51105055964 has 12 divisors (see below), whose sum is σ = 89462091600. Its totient is φ = 25544458368.

The previous prime is 51105055949. The next prime is 51105055979. The reversal of 51105055964 is 46955050115.

51105055964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51105055949) and next prime (51105055979).

It is a super-2 number, since 2×51105055964² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003144 + ... + 2028495.

It is an arithmetic number, because the mean of its divisors is an integer number (7455174300).

Almost surely, 2^51105055964 is an apocalyptic number.

It is an amenable number.

51105055964 is a deficient number, since it is larger than the sum of its proper divisors (38357035636).

51105055964 is a wasteful number, since it uses less digits than its factorization.

51105055964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034812 (or 4034810 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 51105055964 in words is "fifty-one billion, one hundred five million, fifty-five thousand, nine hundred sixty-four".