402644225405441 has 8 divisors (see below), whose sum is σ = 402748962608520. Its totient is φ = 402539499056128.

The previous prime is 402644225405399. The next prime is 402644225405447. The reversal of 402644225405441 is 144504522446204.

It can be written as a sum of positive squares in 4 ways, for example, as 59503018992400 + 343141206413041 = 7713820^2 + 18524071^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 402644225405441 - 2¹⁰ = 402644225404417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402644225405447) 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, 71756165 + ... + 77163693.

It is an arithmetic number, because the mean of its divisors is an integer number (50343620326065).

Almost surely, 2^{402644225405441} is an apocalyptic number.

It is an amenable number.

402644225405441 is a deficient number, since it is larger than the sum of its proper divisors (104737203079).

402644225405441 is a wasteful number, since it uses less digits than its factorization.

402644225405441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5426883.

The product of its (nonzero) digits is 4915200, while the sum is 47.

The spelling of 402644225405441 in words is "four hundred two trillion, six hundred forty-four billion, two hundred twenty-five million, four hundred five thousand, four hundred forty-one".