823578427701 has 12 divisors (see below), whose sum is σ = 1212058818828. Its totient is φ = 538692807744.

The previous prime is 823578427691. The next prime is 823578427747. The reversal of 823578427701 is 107724875328.

823578427701 is a `hidden beast` number, since 8 + 23 + 578 + 42 + 7 + 7 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 677806424100 + 145772003601 = 823290^2 + 381801^2 .

It is not a de Polignac number, because 823578427701 - 2¹³ = 823578419509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823578427751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 863289280 + ... + 863290233.

It is an arithmetic number, because the mean of its divisors is an integer number (101004901569).

Almost surely, 2^823578427701 is an apocalyptic number.

It is an amenable number.

823578427701 is a deficient number, since it is larger than the sum of its proper divisors (388480391127).

823578427701 is a wasteful number, since it uses less digits than its factorization.

823578427701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726579572 (or 1726579569 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 54.

The spelling of 823578427701 in words is "eight hundred twenty-three billion, five hundred seventy-eight million, four hundred twenty-seven thousand, seven hundred one".