9855778803 has 8 divisors (see below), whose sum is σ = 14151887568. Its totient is φ = 6065094624.

The previous prime is 9855778769. The next prime is 9855778811. The reversal of 9855778803 is 3088775589.

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

It is not a de Polignac number, because 9855778803 - 2⁹ = 9855778291 is a prime.

It is a super-2 number, since 2×9855778803² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9855778813) 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, 126356100 + ... + 126356177.

It is an arithmetic number, because the mean of its divisors is an integer number (1768985946).

Almost surely, 2^9855778803 is an apocalyptic number.

9855778803 is a deficient number, since it is larger than the sum of its proper divisors (4296108765).

9855778803 is a wasteful number, since it uses less digits than its factorization.

9855778803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252712293.

The product of its (nonzero) digits is 16934400, while the sum is 60.

The square root of 9855778803 is about 99276.2751265377. The cubic root of 9855778803 is about 2144.0273247653.

The spelling of 9855778803 in words is "nine billion, eight hundred fifty-five million, seven hundred seventy-eight thousand, eight hundred three".