51143504211 has 6 divisors (see below), whose sum is σ = 73873950540. Its totient is φ = 34095669468.

The previous prime is 51143504183. The next prime is 51143504273. The reversal of 51143504211 is 11240534115.

51143504211 is a `hidden beast` number, since 5 + 1 + 143 + 504 + 2 + 11 = 666.

It is not a de Polignac number, because 51143504211 - 2¹⁸ = 51143242067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51143504411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2841305781 + ... + 2841305798.

It is an arithmetic number, because the mean of its divisors is an integer number (12312325090).

Almost surely, 2^51143504211 is an apocalyptic number.

51143504211 is a deficient number, since it is larger than the sum of its proper divisors (22730446329).

51143504211 is a wasteful number, since it uses less digits than its factorization.

51143504211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682611585 (or 5682611582 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 51143504211 in words is "fifty-one billion, one hundred forty-three million, five hundred four thousand, two hundred eleven".