51420230141200 has 60 divisors (see below), whose sum is σ = 123803922156928. Its totient is φ = 20523668457600.

The previous prime is 51420230141197. The next prime is 51420230141201. The reversal of 51420230141200 is 214103202415.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (51420230141201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138638316 + ... + 139008715.

Almost surely, 2^{51420230141200} is an apocalyptic number.

51420230141200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51420230141200 is an abundant number, since it is smaller than the sum of its proper divisors (72383692015728).

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

51420230141200 is a wasteful number, since it uses less digits than its factorization.

51420230141200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277647512 (or 277647501 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 51420230141200 its reverse (214103202415), we get a palindrome (51634333343615).

The spelling of 51420230141200 in words is "fifty-one trillion, four hundred twenty billion, two hundred thirty million, one hundred forty-one thousand, two hundred".