51500016554 has 48 divisors (see below), whose sum is σ = 90942588000. Its totient is φ = 21807021600.

The previous prime is 51500016527. The next prime is 51500016559. The reversal of 51500016554 is 45561000515.

It is a self number, because there is not a number n which added to its sum of digits gives 51500016554.

It is not an unprimeable number, because it can be changed into a prime (51500016559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4933889 + ... + 4944315.

It is an arithmetic number, because the mean of its divisors is an integer number (1894637250).

Almost surely, 2^51500016554 is an apocalyptic number.

51500016554 is a deficient number, since it is larger than the sum of its proper divisors (39442571446).

51500016554 is a wasteful number, since it uses less digits than its factorization.

51500016554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11043 (or 11036 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 51500016554 in words is "fifty-one billion, five hundred million, sixteen thousand, five hundred fifty-four".