878147899461 has 24 divisors (see below), whose sum is σ = 1450510761024. Its totient is φ = 501497720640.

The previous prime is 878147899361. The next prime is 878147899469. The reversal of 878147899461 is 164998741878.

878147899461 is a `hidden beast` number, since 8 + 7 + 8 + 1 + 4 + 78 + 99 + 461 = 666.

It is not a de Polignac number, because 878147899461 - 2¹¹ = 878147897413 is a prime.

It is a super-3 number, since 3×878147899461³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 878147899461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878147899469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4075800 + ... + 4285841.

It is an arithmetic number, because the mean of its divisors is an integer number (60437948376).

Almost surely, 2^878147899461 is an apocalyptic number.

It is an amenable number.

878147899461 is a deficient number, since it is larger than the sum of its proper divisors (572362861563).

878147899461 is a wasteful number, since it uses less digits than its factorization.

878147899461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8363321 (or 8363318 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 72.

The spelling of 878147899461 in words is "eight hundred seventy-eight billion, one hundred forty-seven million, eight hundred ninety-nine thousand, four hundred sixty-one".