51871804784160 has 192 divisors, whose sum is σ = 172896492625920. Its totient is φ = 13035845790720.

The previous prime is 51871804784159. The next prime is 51871804784183. The reversal of 51871804784160 is 6148740817815.

It is a happy number.

It is a super-4 number, since 4×51871804784160⁴ (a number of 56 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 51871804784094 and 51871804784103.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13147342 + ... + 16631181.

It is an arithmetic number, because the mean of its divisors is an integer number (900502565760).

Almost surely, 2^{51871804784160} is an apocalyptic number.

It is an amenable number.

51871804784160 is an abundant number, since it is smaller than the sum of its proper divisors (121024687841760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51871804784160 is a wasteful number, since it uses less digits than its factorization.

51871804784160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29778751 (or 29778743 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 60.

The spelling of 51871804784160 in words is "fifty-one trillion, eight hundred seventy-one billion, eight hundred four million, seven hundred eighty-four thousand, one hundred sixty".