855441859801 has 9 divisors (see below), whose sum is σ = 902853307701. Its totient is φ = 810401955804.

The previous prime is 855441859771. The next prime is 855441859847. The reversal of 855441859801 is 108958144558.

The square root of 855441859801 is 924901.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 855441859801 - 2⁹ = 855441859289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855441859201) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17548780 + ... + 17597458.

It is an arithmetic number, because the mean of its divisors is an integer number (100317034189).

Almost surely, 2^855441859801 is an apocalyptic number.

855441859801 is the 924901-st square number.

855441859801 is the 462451-st centered octagonal number.

It is an amenable number.

855441859801 is a deficient number, since it is larger than the sum of its proper divisors (47411447900).

855441859801 is an frugal number, since it uses more digits than its factorization.

855441859801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97396 (or 48698 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 58.

The spelling of 855441859801 in words is "eight hundred fifty-five billion, four hundred forty-one million, eight hundred fifty-nine thousand, eight hundred one".