612256236817105 has 24 divisors (see below), whose sum is σ = 758097816929856. Its totient is φ = 474584720892480.

The previous prime is 612256236817087. The next prime is 612256236817109. The reversal of 612256236817105 is 501718632652216.

It is not a de Polignac number, because 612256236817105 - 2²¹ = 612256234719953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612256236817109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244336717 + ... + 246829786.

It is an arithmetic number, because the mean of its divisors is an integer number (31587409038744).

Almost surely, 2^{612256236817105} is an apocalyptic number.

It is an amenable number.

612256236817105 is a deficient number, since it is larger than the sum of its proper divisors (145841580112751).

612256236817105 is an equidigital number, since it uses as much as digits as its factorization.

612256236817105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491166697 (or 491166636 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 612256236817105 in words is "six hundred twelve trillion, two hundred fifty-six billion, two hundred thirty-six million, eight hundred seventeen thousand, one hundred five".