844561918101 has 8 divisors (see below), whose sum is σ = 1228453699104. Its totient is φ = 511855707920.

The previous prime is 844561918091. The next prime is 844561918103. The reversal of 844561918101 is 101819165448.

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 844561918101 - 2⁷ = 844561917973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844561918103) 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, 12796392666 + ... + 12796392731.

It is an arithmetic number, because the mean of its divisors is an integer number (153556712388).

Almost surely, 2^844561918101 is an apocalyptic number.

It is an amenable number.

844561918101 is a deficient number, since it is larger than the sum of its proper divisors (383891781003).

844561918101 is a wasteful number, since it uses less digits than its factorization.

844561918101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25592785411.

The product of its (nonzero) digits is 276480, while the sum is 48.

The spelling of 844561918101 in words is "eight hundred forty-four billion, five hundred sixty-one million, nine hundred eighteen thousand, one hundred one".