642312174265 has 8 divisors (see below), whose sum is σ = 771026432328. Its totient is φ = 513681857280.

The previous prime is 642312174209. The next prime is 642312174323. The reversal of 642312174265 is 562471213246.

It can be written as a sum of positive squares in 4 ways, for example, as 31846543936 + 610465630329 = 178456^2 + 781323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 642312174265 - 2²¹ = 642310077113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20968432 + ... + 20999041.

It is an arithmetic number, because the mean of its divisors is an integer number (96378304041).

Almost surely, 2^642312174265 is an apocalyptic number.

It is an amenable number.

642312174265 is a deficient number, since it is larger than the sum of its proper divisors (128714258063).

642312174265 is a wasteful number, since it uses less digits than its factorization.

642312174265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41970539.

The product of its digits is 483840, while the sum is 43.

The spelling of 642312174265 in words is "six hundred forty-two billion, three hundred twelve million, one hundred seventy-four thousand, two hundred sixty-five".