51105605104 has 20 divisors (see below), whose sum is σ = 99032368864. Its totient is φ = 25548864768.

The previous prime is 51105605101. The next prime is 51105605107. The reversal of 51105605104 is 40150650115.

It is a happy number.

51105605104 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 (51105605101) and next prime (51105605107).

It is a super-2 number, since 2×51105605104² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51105605101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137592 + ... + 348055.

Almost surely, 2^51105605104 is an apocalyptic number.

It is an amenable number.

51105605104 is a deficient number, since it is larger than the sum of its proper divisors (47926763760).

51105605104 is a wasteful number, since it uses less digits than its factorization.

51105605104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492232 (or 492226 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 51105605104 in words is "fifty-one billion, one hundred five million, six hundred five thousand, one hundred four".