442136543335565 has 8 divisors (see below), whose sum is σ = 571376456002968. Its totient is φ = 326500832001600.

The previous prime is 442136543335561. The next prime is 442136543335573. The reversal of 442136543335565 is 565533345631244.

It can be written as a sum of positive squares in 4 ways, for example, as 4895855424964 + 437240687910601 = 2212658^2 + 20910301^2 .

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

It is not a de Polignac number, because 442136543335565 - 2² = 442136543335561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442136543335561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3401050333286 + ... + 3401050333415.

It is an arithmetic number, because the mean of its divisors is an integer number (71422057000371).

Almost surely, 2^{442136543335565} is an apocalyptic number.

It is an amenable number.

442136543335565 is a deficient number, since it is larger than the sum of its proper divisors (129239912667403).

442136543335565 is a wasteful number, since it uses less digits than its factorization.

442136543335565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6802100666719.

The product of its digits is 233280000, while the sum is 59.

The spelling of 442136543335565 in words is "four hundred forty-two trillion, one hundred thirty-six billion, five hundred forty-three million, three hundred thirty-five thousand, five hundred sixty-five".