51555034136 has 32 divisors (see below), whose sum is σ = 97796743200. Its totient is φ = 25476890880.

The previous prime is 51555034133. The next prime is 51555034147. The reversal of 51555034136 is 63143055515.

It is a self number, because there is not a number n which added to its sum of digits gives 51555034136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51555034133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357956 + ... + 480876.

It is an arithmetic number, because the mean of its divisors is an integer number (3056148225).

Almost surely, 2^51555034136 is an apocalyptic number.

It is an amenable number.

51555034136 is a deficient number, since it is larger than the sum of its proper divisors (46241709064).

51555034136 is a wasteful number, since it uses less digits than its factorization.

51555034136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123539 (or 123535 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 38.

The spelling of 51555034136 in words is "fifty-one billion, five hundred fifty-five million, thirty-four thousand, one hundred thirty-six".