612755557215 has 48 divisors (see below), whose sum is σ = 1037118807648. Its totient is φ = 308886607872.

The previous prime is 612755557199. The next prime is 612755557303. The reversal of 612755557215 is 512755557216.

It is not a de Polignac number, because 612755557215 - 2⁴ = 612755557199 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 2214027 + ... + 2475363.

It is an arithmetic number, because the mean of its divisors is an integer number (21606641826).

Almost surely, 2^612755557215 is an apocalyptic number.

612755557215 is a deficient number, since it is larger than the sum of its proper divisors (424363250433).

612755557215 is a wasteful number, since it uses less digits than its factorization.

612755557215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261816 (or 261797 counting only the distinct ones).

The product of its digits is 3675000, while the sum is 51.

Subtracting from 612755557215 its reverse (512755557216), we obtain a palindrome (99999999999).

The spelling of 612755557215 in words is "six hundred twelve billion, seven hundred fifty-five million, five hundred fifty-seven thousand, two hundred fifteen".