51206622543 has 24 divisors (see below), whose sum is σ = 78293030400. Its totient is φ = 32160329424.

The previous prime is 51206622499. The next prime is 51206622553. The reversal of 51206622543 is 34522660215.

51206622543 is a `hidden beast` number, since 5 + 1 + 20 + 6 + 622 + 5 + 4 + 3 = 666.

It is not a de Polignac number, because 51206622543 - 2¹⁴ = 51206606159 is a prime.

It is a super-2 number, since 2×51206622543² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51206622498 and 51206622507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51206622553) 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, 805855 + ... + 867072.

It is an arithmetic number, because the mean of its divisors is an integer number (3262209600).

Almost surely, 2^51206622543 is an apocalyptic number.

51206622543 is a deficient number, since it is larger than the sum of its proper divisors (27086407857).

51206622543 is a wasteful number, since it uses less digits than its factorization.

51206622543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673131 (or 1673128 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 51206622543 in words is "fifty-one billion, two hundred six million, six hundred twenty-two thousand, five hundred forty-three".