51001040155 has 16 divisors (see below), whose sum is σ = 66649595040. Its totient is φ = 37239130368.

The previous prime is 51001040137. The next prime is 51001040203. The reversal of 51001040155 is 55104010015.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51001040155 - 2¹⁷ = 51000909083 is a prime.

It is a super-2 number, since 2×51001040155² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4402257 + ... + 4413826.

It is an arithmetic number, because the mean of its divisors is an integer number (4165599690).

Almost surely, 2^51001040155 is an apocalyptic number.

51001040155 is a deficient number, since it is larger than the sum of its proper divisors (15648554885).

51001040155 is a wasteful number, since it uses less digits than its factorization.

51001040155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8816190.

The product of its (nonzero) digits is 500, while the sum is 22.

The spelling of 51001040155 in words is "fifty-one billion, one million, forty thousand, one hundred fifty-five".