51950558438 has 16 divisors (see below), whose sum is σ = 78192156816. Its totient is φ = 25886652960.

The previous prime is 51950558437. The next prime is 51950558449. The reversal of 51950558438 is 83485505915.

It is a self number, because there is not a number n which added to its sum of digits gives 51950558438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51950558437) 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 7 ways as a sum of consecutive naturals, for example, 683720 + ... + 755892.

It is an arithmetic number, because the mean of its divisors is an integer number (4887009801).

Almost surely, 2^51950558438 is an apocalyptic number.

51950558438 is a deficient number, since it is larger than the sum of its proper divisors (26241598378).

51950558438 is a wasteful number, since it uses less digits than its factorization.

51950558438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73399.

The product of its (nonzero) digits is 4320000, while the sum is 53.

The spelling of 51950558438 in words is "fifty-one billion, nine hundred fifty million, five hundred fifty-eight thousand, four hundred thirty-eight".