344857356845 has 32 divisors (see below), whose sum is σ = 427082997600. Its totient is φ = 267152834560.

The previous prime is 344857356761. The next prime is 344857356847. The reversal of 344857356845 is 548653758443.

It can be written as a sum of positive squares in 16 ways, for example, as 238771004164 + 106086352681 = 488642^2 + 325709^2 .

It is not a de Polignac number, because 344857356845 - 2²⁸ = 344588921389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344857356847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51831539 + ... + 51838191.

It is an arithmetic number, because the mean of its divisors is an integer number (13346343675).

Almost surely, 2^344857356845 is an apocalyptic number.

It is an amenable number.

344857356845 is a deficient number, since it is larger than the sum of its proper divisors (82225640755).

344857356845 is a wasteful number, since it uses less digits than its factorization.

344857356845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8545.

The product of its digits is 193536000, while the sum is 62.

The spelling of 344857356845 in words is "three hundred forty-four billion, eight hundred fifty-seven million, three hundred fifty-six thousand, eight hundred forty-five".