51887118044 has 6 divisors (see below), whose sum is σ = 90802456584. Its totient is φ = 25943559020.

The previous prime is 51887118013. The next prime is 51887118067. The reversal of 51887118044 is 44081178815.

It is a happy number.

51887118044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51887118044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6485889752 + ... + 6485889759.

It is an arithmetic number, because the mean of its divisors is an integer number (15133742764).

Almost surely, 2^51887118044 is an apocalyptic number.

It is an amenable number.

51887118044 is a deficient number, since it is larger than the sum of its proper divisors (38915338540).

51887118044 is a wasteful number, since it uses less digits than its factorization.

51887118044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12971779515 (or 12971779513 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 47.

The spelling of 51887118044 in words is "fifty-one billion, eight hundred eighty-seven million, one hundred eighteen thousand, forty-four".