5211231554215 has 4 divisors (see below), whose sum is σ = 6253477865064. Its totient is φ = 4168985243368.

The previous prime is 5211231554167. The next prime is 5211231554237. The reversal of 5211231554215 is 5124551321125.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5211231554215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521123155417 + ... + 521123155426.

It is an arithmetic number, because the mean of its divisors is an integer number (1563369466266).

Almost surely, 2^{5211231554215} is an apocalyptic number.

5211231554215 is a deficient number, since it is larger than the sum of its proper divisors (1042246310849).

5211231554215 is a wasteful number, since it uses less digits than its factorization.

5211231554215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042246310848.

The product of its digits is 60000, while the sum is 37.

The spelling of 5211231554215 in words is "five trillion, two hundred eleven billion, two hundred thirty-one million, five hundred fifty-four thousand, two hundred fifteen".