51121514143 has 24 divisors (see below), whose sum is σ = 60122296752. Its totient is φ = 43336871424.

The previous prime is 51121514107. The next prime is 51121514161. The reversal of 51121514143 is 34141512115.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-51121514143 is a prime.

It is a super-2 number, since 2×51121514143² (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 (51121514183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9441505 + ... + 9446917.

It is an arithmetic number, because the mean of its divisors is an integer number (2505095698).

Almost surely, 2^51121514143 is an apocalyptic number.

51121514143 is a deficient number, since it is larger than the sum of its proper divisors (9000782609).

51121514143 is a wasteful number, since it uses less digits than its factorization.

51121514143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7511 (or 7504 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The spelling of 51121514143 in words is "fifty-one billion, one hundred twenty-one million, five hundred fourteen thousand, one hundred forty-three".