78861153 has 16 divisors (see below), whose sum is σ = 126494720. Its totient is φ = 42691536.

The previous prime is 78861149. The next prime is 78861217. The reversal of 78861153 is 35116887.

It is not a de Polignac number, because 78861153 - 2² = 78861149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78861053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98425 + ... + 99222.

It is an arithmetic number, because the mean of its divisors is an integer number (7905920).

Almost surely, 2^78861153 is an apocalyptic number.

It is an amenable number.

78861153 is a deficient number, since it is larger than the sum of its proper divisors (47633567).

78861153 is a wasteful number, since it uses less digits than its factorization.

78861153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197676.

The product of its digits is 40320, while the sum is 39.

The square root of 78861153 is about 8880.3802283461. The cubic root of 78861153 is about 428.8325154050.

The spelling of 78861153 in words is "seventy-eight million, eight hundred sixty-one thousand, one hundred fifty-three".