51212652261330 has 32 divisors (see below), whose sum is σ = 140468989060224. Its totient is φ = 11705749088256.

The previous prime is 51212652261259. The next prime is 51212652261361. The reversal of 51212652261330 is 3316225621215.

It is a super-2 number, since 2×51212652261330² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121934886127 + ... + 121934886546.

It is an arithmetic number, because the mean of its divisors is an integer number (4389655908132).

Almost surely, 2^{51212652261330} is an apocalyptic number.

51212652261330 is an abundant number, since it is smaller than the sum of its proper divisors (89256336798894).

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

51212652261330 is a wasteful number, since it uses less digits than its factorization.

51212652261330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243869772690.

The product of its (nonzero) digits is 129600, while the sum is 39.

Adding to 51212652261330 its reverse (3316225621215), we get a palindrome (54528877882545).

The spelling of 51212652261330 in words is "fifty-one trillion, two hundred twelve billion, six hundred fifty-two million, two hundred sixty-one thousand, three hundred thirty".