51143051618533 has 12 divisors (see below), whose sum is σ = 59886930569952. Its totient is φ = 43546590775800.

The previous prime is 51143051618521. The next prime is 51143051618537. The reversal of 51143051618533 is 33581615034115.

It is not a de Polignac number, because 51143051618533 - 2⁵ = 51143051618501 is a prime.

It is a super-2 number, since 2×51143051618533² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51143051618537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3456071235 + ... + 3456086032.

It is an arithmetic number, because the mean of its divisors is an integer number (4990577547496).

Almost surely, 2^{51143051618533} is an apocalyptic number.

It is an amenable number.

51143051618533 is a deficient number, since it is larger than the sum of its proper divisors (8743878951419).

51143051618533 is a wasteful number, since it uses less digits than its factorization.

51143051618533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6912157432 (or 6912157425 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 51143051618533 in words is "fifty-one trillion, one hundred forty-three billion, fifty-one million, six hundred eighteen thousand, five hundred thirty-three".