51511141200 has 60 divisors (see below), whose sum is σ = 165007359488. Its totient is φ = 13736304000.

The previous prime is 51511141133. The next prime is 51511141219. The reversal of 51511141200 is 214111515.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21461776 + ... + 21464175.

Almost surely, 2^51511141200 is an apocalyptic number.

51511141200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51511141200 is an abundant number, since it is smaller than the sum of its proper divisors (113496218288).

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

51511141200 is a wasteful number, since it uses less digits than its factorization.

51511141200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42925972 (or 42925961 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 51511141200 its reverse (214111515), we get a palindrome (51725252715).

The spelling of 51511141200 in words is "fifty-one billion, five hundred eleven million, one hundred forty-one thousand, two hundred".