51004543155 has 16 divisors (see below), whose sum is σ = 81669077664. Its totient is φ = 27181820160.

The previous prime is 51004543153. The next prime is 51004543157. The reversal of 51004543155 is 55134540015.

It is an interprime number because it is at equal distance from previous prime (51004543153) and next prime (51004543157).

It is not a de Polignac number, because 51004543155 - 2¹ = 51004543153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51004543151) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1267204 + ... + 1306833.

It is an arithmetic number, because the mean of its divisors is an integer number (5104317354).

Almost surely, 2^51004543155 is an apocalyptic number.

51004543155 is a deficient number, since it is larger than the sum of its proper divisors (30664534509).

51004543155 is a wasteful number, since it uses less digits than its factorization.

51004543155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575366.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 51004543155 in words is "fifty-one billion, four million, five hundred forty-three thousand, one hundred fifty-five".