51148988086 has 16 divisors (see below), whose sum is σ = 88324011936. Its totient is φ = 21760986816.

The previous prime is 51148988029. The next prime is 51148988087. The reversal of 51148988086 is 68088984115.

It is a self number, because there is not a number n which added to its sum of digits gives 51148988086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51148988087) 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 7 ways as a sum of consecutive naturals, for example, 13332021 + ... + 13335856.

It is an arithmetic number, because the mean of its divisors is an integer number (5520250746).

Almost surely, 2^51148988086 is an apocalyptic number.

51148988086 is a deficient number, since it is larger than the sum of its proper divisors (37175023850).

51148988086 is a wasteful number, since it uses less digits than its factorization.

51148988086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26668023.

The product of its (nonzero) digits is 4423680, while the sum is 58.

The spelling of 51148988086 in words is "fifty-one billion, one hundred forty-eight million, nine hundred eighty-eight thousand, eighty-six".