51377996871 has 8 divisors (see below), whose sum is σ = 76115550960. Its totient is φ = 34251997896.

The previous prime is 51377996797. The next prime is 51377996897. The reversal of 51377996871 is 17869977315.

51377996871 is a `hidden beast` number, since 51 + 377 + 99 + 68 + 71 = 666.

It is not a de Polignac number, because 51377996871 - 2¹¹ = 51377994823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51377996799 and 51377996808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51377996171) 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, 951444360 + ... + 951444413.

It is an arithmetic number, because the mean of its divisors is an integer number (9514443870).

Almost surely, 2^51377996871 is an apocalyptic number.

51377996871 is a deficient number, since it is larger than the sum of its proper divisors (24737554089).

51377996871 is a wasteful number, since it uses less digits than its factorization.

51377996871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902888782 (or 1902888776 counting only the distinct ones).

The product of its digits is 20003760, while the sum is 63.

It can be divided in two parts, 5137 and 7996871, that added together give a palindrome (8002008).

The spelling of 51377996871 in words is "fifty-one billion, three hundred seventy-seven million, nine hundred ninety-six thousand, eight hundred seventy-one".