9895778602231 has 32 divisors (see below), whose sum is σ = 10684423208960. Its totient is φ = 9137286629856.

The previous prime is 9895778602189. The next prime is 9895778602247. The reversal of 9895778602231 is 1322068775989.

It is not a de Polignac number, because 9895778602231 - 2¹⁹ = 9895778077943 is a prime.

It is a super-2 number, since 2×9895778602231² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9895778602261) 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 31 ways as a sum of consecutive naturals, for example, 59249866 + ... + 59416648.

It is an arithmetic number, because the mean of its divisors is an integer number (333888225280).

Almost surely, 2^{9895778602231} is an apocalyptic number.

9895778602231 is a deficient number, since it is larger than the sum of its proper divisors (788644606729).

9895778602231 is a wasteful number, since it uses less digits than its factorization.

9895778602231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167363.

The product of its (nonzero) digits is 91445760, while the sum is 67.

The spelling of 9895778602231 in words is "nine trillion, eight hundred ninety-five billion, seven hundred seventy-eight million, six hundred two thousand, two hundred thirty-one".