612205623215 has 4 divisors (see below), whose sum is σ = 734646747864. Its totient is φ = 489764498568.

The previous prime is 612205623167. The next prime is 612205623269. The reversal of 612205623215 is 512326502216.

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

It is a cyclic number.

It is not a de Polignac number, because 612205623215 - 2²² = 612201428911 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 61220562317 + ... + 61220562326.

It is an arithmetic number, because the mean of its divisors is an integer number (183661686966).

Almost surely, 2^612205623215 is an apocalyptic number.

612205623215 is a deficient number, since it is larger than the sum of its proper divisors (122441124649).

612205623215 is a wasteful number, since it uses less digits than its factorization.

612205623215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122441124648.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 612205623215 in words is "six hundred twelve billion, two hundred five million, six hundred twenty-three thousand, two hundred fifteen".