51421014212 has 12 divisors (see below), whose sum is σ = 89994844716. Its totient is φ = 25708201440.

The previous prime is 51421014137. The next prime is 51421014223. The reversal of 51421014212 is 21241012415.

It can be written as a sum of positive squares in 2 ways, for example, as 23459823556 + 27961190656 = 153166^2 + 167216^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525743 + ... + 615830.

It is an arithmetic number, because the mean of its divisors is an integer number (7499570393).

Almost surely, 2^51421014212 is an apocalyptic number.

It is an amenable number.

51421014212 is a deficient number, since it is larger than the sum of its proper divisors (38573830504).

51421014212 is a wasteful number, since it uses less digits than its factorization.

51421014212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152838 (or 1152836 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 51421014212 its reverse (21241012415), we get a palindrome (72662026627).

The spelling of 51421014212 in words is "fifty-one billion, four hundred twenty-one million, fourteen thousand, two hundred twelve".