9861378471 has 12 divisors (see below), whose sum is σ = 16279101072. Its totient is φ = 5635073376.

The previous prime is 9861378467. The next prime is 9861378481. The reversal of 9861378471 is 1748731689.

9861378471 is a `hidden beast` number, since 98 + 6 + 13 + 78 + 471 = 666.

9861378471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9861378471 - 2² = 9861378467 is a prime.

It is a super-3 number, since 3×9861378471³ (a number of 31 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9861378481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78264846 + ... + 78264971.

It is an arithmetic number, because the mean of its divisors is an integer number (1356591756).

Almost surely, 2^9861378471 is an apocalyptic number.

9861378471 is a deficient number, since it is larger than the sum of its proper divisors (6417722601).

9861378471 is a wasteful number, since it uses less digits than its factorization.

9861378471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156529830 (or 156529827 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 9861378471 is about 99304.4735699253. The cubic root of 9861378471 is about 2144.4332987091.

The spelling of 9861378471 in words is "nine billion, eight hundred sixty-one million, three hundred seventy-eight thousand, four hundred seventy-one".