51212411421215 has 16 divisors (see below), whose sum is σ = 67064328729216. Its totient is φ = 37232819844000.

The previous prime is 51212411421191. The next prime is 51212411421251.

51212411421215 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51212411421215 - 2³² = 51208116453919 is a prime.

It is a super-2 number, since 2×51212411421215² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156964061 + ... + 157289990.

It is an arithmetic number, because the mean of its divisors is an integer number (4191520545576).

Almost surely, 2^{51212411421215} is an apocalyptic number.

51212411421215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51212411421215 is a deficient number, since it is larger than the sum of its proper divisors (15851917308001).

51212411421215 is a wasteful number, since it uses less digits than its factorization.

51212411421215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314257030.

The product of its digits is 6400, while the sum is 32.

It can be divided in two parts, 5121241 and 1421215, that added together give a palindrome (6542456).

The spelling of 51212411421215 in words is "fifty-one trillion, two hundred twelve billion, four hundred eleven million, four hundred twenty-one thousand, two hundred fifteen".