51012212452400 has 60 divisors (see below), whose sum is σ = 126510286912704. Its totient is φ = 19746662880000.

The previous prime is 51012212452393. The next prime is 51012212452403. The reversal of 51012212452400 is 425421221015.

It is not an unprimeable number, because it can be changed into a prime (51012212452403) 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, 2056931651 + ... + 2056956450.

Almost surely, 2^{51012212452400} is an apocalyptic number.

51012212452400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51012212452400 is an abundant number, since it is smaller than the sum of its proper divisors (75498074460304).

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

51012212452400 is a wasteful number, since it uses less digits than its factorization.

51012212452400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113888150 (or 4113888139 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 51012212452400 its reverse (425421221015), we get a palindrome (51437633673415).

The spelling of 51012212452400 in words is "fifty-one trillion, twelve billion, two hundred twelve million, four hundred fifty-two thousand, four hundred".