51040560623 has 16 divisors (see below), whose sum is σ = 58222654560. Its totient is φ = 44325743616.

The previous prime is 51040560611. The next prime is 51040560647. The reversal of 51040560623 is 32606504015.

It is a cyclic number.

It is not a de Polignac number, because 51040560623 - 2²⁸ = 50772125167 is a prime.

It is a super-3 number, since 3×51040560623³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51040560623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51040560673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544211 + ... + 631067.

It is an arithmetic number, because the mean of its divisors is an integer number (3638915910).

Almost surely, 2^51040560623 is an apocalyptic number.

51040560623 is a deficient number, since it is larger than the sum of its proper divisors (7182093937).

51040560623 is a wasteful number, since it uses less digits than its factorization.

51040560623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89546.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 51040560623 in words is "fifty-one billion, forty million, five hundred sixty thousand, six hundred twenty-three".